CN101879079B

CN101879079B - Biopsy needle

Info

Publication number: CN101879079B
Application number: CN201010214737.5A
Authority: CN
Inventors: 袁侨英; 李学军; 徐强; 王璋; 司良毅; 朱正伟
Original assignee: First Affiliated Hospital of TMMU
Current assignee: Third Military Medical University TMMU; First Affiliated Hospital of TMMU
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2014-09-03
Anticipated expiration: 2030-06-30
Also published as: CN101879079A

Abstract

The invention provides a biopsy needle which comprises a needle tube, a temperature sensing device and a sampling device, wherein the needle wall of the needle tube, which is close to one end of the needle tip, is axially provided with a groove, and the middle of the groove is provided with an annular groove along the circumfericial direction; the middle of a temperature sensor of the temperature sensing device is articulated on the inner wall of the needle tube on the top part of the groove to form a lever structure; one end of the temperature sensor is connected with a temperature sensing probe, while the other end is articulated with the upper end of a connecting rod; the lower end of the connecting rod is articulated with the upper end of a control rod of the temperature sensor, while the lower end of the control rod of the temperature sensor is connected with a temperature display; the sampling device comprises a sampling barrel, a sampling cutter and a sampling cutter control rod; the sampling barrel is vertically fixed in the middle of the temperature sensor and opens downwards; the sampling cutter forms an arc shape adapted to the annular groove along the peripheral direction; and the upper end of the sampling cutter control rod is connected with the sampling cutter, while the lower end is connected with a rotary button. The biopsy needle has convenient operation, small wound and more pertinence for obtaining materials, and the diagnosis rate is improved.

Description

Biopsy needle

Technical field

The present invention relates to a kind of medical apparatus and instruments, particularly a kind of biopsy needle.

Background technology

Thoracic cavity or seroperitoneum are clinical common disease, regular incidence, because its cause of disease is various, are difficult to diagnosis fast and accurately, and then affect follow-up treatment, cause economical and healthy loss to patient and family members thereof, even cause delay, the deterioration of the state of an illness.At present routine clinical etiological diagnosis is mainly relied on through hydrothorax routine biochemistry, x-ray and CT, hydrothorax and phlegm cytology checking, fiberoptic bronchoscopy etc., can assist to make etiological diagnosis for most of patient, but still have some patients were not make a definite diagnosis, also often run into clinically this type of patient, be difficult to determine its cause of disease, according to the literature greatly about 10%～20%.

That biopsy of pleura has is easy, quick, patient is easy to the advantages such as acceptance, can effectively improve the diagnosis of the hydrothorax cause of disease.But also there is shortcomings and limitation in existing biopsy of pleura: when hydrothorax because Pleural Lesions is not uniformity, pathological changes is confined to a certain position of pleura more or kitchen range distributes, biopsy of pleura carries out under non-direct-view, blindness is large, clinical height suspects that Malignant Pleural is not to fill the air distribution on pleura, sometimes need different parts repeatedly biopsy just can obtain positive findings, the traditional Pleura biopsy needle once amount of drawing materials is less, also limited accuracy, false negative rate can reach more than 40%, sometimes even need repeatedly to draw materials, cause health and economic loss to patient.Tradition biopsy needle, because inserting needle needs deeplyer, may damage lung tissue when hydrothorax amount is few, and the degree of depth of drawing materials can not control, and can only, by feel and patient's experience, also easily cause damage.

The method that present stage obtains peritoneal tissues specimen has: laparotomy ventrotomy detect with peritoneoscope under draw materials, for these two technology, patient all will bear the risk of anesthesia and operation, unsuitable popularization and application; Cytology examination positive rate is lower; Traditional hook-type pin peritoneal biopsy, the tissue of drawing materials is few, and blindness is large, and diagnostic accuracy is not high, the complication such as easily damages, hemorrhage yet.On the other hand, peritoneopathy thickening is thin to differ, and what have is very thin, and puncture easily penetrates; Some peritoneopathy displacements are in internal organs deep, puncture difficult through.So existing peritoneal biopsy pin is difficult to ensure to be accurately punctured to safely peritoneal tissues, can not ensure that peritoneal tissues specimen amount is more than enough, is not damaged to again internal organs around, as intestinal tube etc.

For above-mentioned deficiency, need to explore a kind of new biopsy needle, it is being retained on the basis of original function, improve and overcome above-mentioned shortcoming.

Summary of the invention

In view of this, the invention provides a kind of biopsy needle, can find the accurate location of pathological tissues, increase the sampling amount of pathological tissues, the accidental injury to surrounding organ is also avoided in the damage that avoiding repeatedly punctures brings simultaneously, has ensured the safety of puncture.

The object of the invention is to be achieved through the following technical solutions: a kind of biopsy needle, comprises needle tubing, temperature sensing device and sampler;

On the needle tubing wall of described needle tubing near needle point one end, have vertically through hole, be along the circumferential direction also provided with an annular groove near on the needle tubing wall of needle tip;

Described temperature sensing device comprises temperature inductor, temperature inductor control stick and is connected temperature inductor and the connecting rod of temperature inductor control stick, the middle part of temperature inductor is articulated with on the needle tubing wall of via top and forms lever construction, temperature inductor one end is connected with temperature sense probe, the other end is articulated with the upper end of connecting rod, the lower end of connecting rod is articulated with the upper end of temperature inductor control stick, and the lower end of temperature inductor control stick connects temperature indicator;

Described sampler comprises sampler barrel, sampling cutter and sampling cutter control stick, sampler barrel is vertically fixedly installed on temperature inductor, when temperature inductor is unfolded, the open end of sampler barrel is concordant with annular groove, sampling cutter is crescent and is positioned at annular groove, sampling cutter control stick is arranged in needle tubing with the mode single-degree-of-freedom that can rotate around its axis, sampling cutter control stick one end is fixedly connected with the handle of a knife of sampling cutter, and the other end is fixedly connected with rotary knob.

Further, described through hole, temperature sensing device and sampler are multiple and are along the circumferential direction uniformly distributed;

Further, described biopsy needle tail end is provided with control stick fixed cap;

Further, the needle point of described biopsy needle is with can be along being placed in needle tubing in the axially movable mode of needle tubing, in needle tubing, be also provided with vertically needle point control stick, needle point control stick is fixedly connected with needle point, on the needle point control stick fixing hole of control stick fixed cap, be provided with female thread, on needle point control stick, be provided with the external screw thread matching with female thread.

The invention has the beneficial effects as follows: biopsy needle of the present invention is provided with temperature sensor, because hemodynamic change can occur at human lesion position, can there is the temperature different from normal structure, when the probe detection of temperature sensor is after pathological tissues, display by temperature sensor shows, accurately find the lesion locations such as tumor or inflammation to show, can accurately sample by the sampler of this biopsy needle; The present invention arranges sampler specially, because the sampler barrel that adopts larger volume samples, the tissue specimen amount obtained compared with traditional sampling method is large, it is many to draw materials, and is convenient to obtain better positive findings, avoided because of the amount damage that repeated puncture causes to patient less; Biopsy needle of the present invention is also provided with the needle point of scalable adjusting, after penetrating, can immediately needle point be retracted in needle tubing, has avoided may causing damage to internal organs such as intestinal tubes in sampling process, has greatly improved the safety of puncture sampling; Therefore biopsy needle of the present invention is easy to operate, and wound is little, draws materials more targetedly, improves diagnosis, has greatly improved the safety of puncture sampling simultaneously.

Brief description of the drawings

Below in conjunction with drawings and Examples, the invention will be further described;

Accompanying drawing 1 is structure cutaway view of the present invention;

The outline drawing that accompanying drawing 2 is sampling cutter of the present invention.

Detailed description of the invention

Accompanying drawing 1 is structural representation of the present invention, the outline drawing that accompanying drawing 2 is sampling cutter of the present invention.As shown in Figure 1, biopsy needle involved in the present invention, comprises needle tubing 1, temperature sensing device and sampler; On the needle tubing wall of described needle tubing 1 near needle point one end, have vertically through hole 2, be along the circumferential direction also provided with an annular groove 3 near on the needle tubing wall of needle tip; Described temperature sensing device comprises temperature inductor 4, temperature inductor control stick 7 and is connected temperature inductor 4 and the connecting rod 6 of temperature inductor control stick 7, the middle part of temperature inductor 4 is articulated with on the needle tubing wall at through hole 2 tops and forms lever construction, temperature inductor 4 one end are connected with temperature sense probe 5, the other end is articulated with the upper end of connecting rod 6, the lower end of connecting rod 6 is articulated with the upper end of temperature inductor control stick 7, and the lower end of temperature inductor control stick 7 connects temperature indicator 8; Described sampler comprises sampler barrel 9, sampling cutter 10 and sampling cutter control stick 11, sampler barrel 9 is vertically fixedly installed on temperature inductor 4, when temperature inductor 4 is unfolded, the open end of sampler barrel is concordant with annular groove 3, sampling cutter 10 is for crescent and be positioned at annular groove 3, sampling cutter control stick 11 is arranged in needle tubing with the mode single-degree-of-freedom that can rotate around its axis, sampling cutter control stick 11 one end are fixedly connected with the handle of a knife of sampling cutter 10, and the other end is fixedly connected with rotary knob.

Using method of the present invention is: before use, promote temperature inductor control stick 7, temperature inductor 4 is placed in through hole 2, crescent sampling cutter 10 is placed in annular groove 3, when biopsy needle penetrates after intraperitoneal, radially pull out temperature inductor control stick 7, temperature inductor 4 is launched completely, back slowly pull biopsy needle, make temperature sense probe be close to abdominal cavity inwall, observe temperature indicator 8, in the time finding that temperature and normal temperature differ larger, illustrate and found diseased region, now axially firmly pull outward biopsy needle along biopsy needle again, the tissue of abdominal cavity inwall diseased region is entered in sampler barrel 9, rotate afterwards sampling cutter 10, make sampling cutter 10 streak sampler barrel along the nozzle face of sampler barrel 9, extract the pathological tissues remaining in sampler barrel, and then axially promote inward biopsy needle along biopsy needle, toward back rotation sampling cutter 10, be placed in toroidal cavity 3, promote temperature inductor control stick 7, temperature inductor 4 is returned in groove 2, slowly biopsy needle is extracted out in patient body, finally taken out the pathological tissues in sampler barrel 9, finally reach the object of sampling.Adopt biopsy needle of the present invention, not only can accurately locate sampling by application of temperature induction apparatus, but also sampler barrel is set specially, the tissue specimen amount obtained compared with traditional sampling method is large, it is many to draw materials, be convenient to obtain better positive findings, avoided because of the amount damage that repeated puncture causes to patient less.

As to further improvement of this embodiment, described temperature sensing device and sampler are multiple and are along the circumferential direction uniformly distributed, so that obtain more Multi-example tissue.

As to further improvement of this embodiment, the afterbody of described temperature sense biopsy needle is also provided with control stick fixed cap 12, for fixed temperature induction apparatus control stick 7 and sampling cutter control stick 11.

As to further improvement of this embodiment, the needle point 13 of described biopsy needle is with can be along being placed in needle tubing in the axially movable mode of needle tubing, in needle tubing, be also provided with vertically needle point control stick 14, needle point control stick 14 is fixedly connected with needle point 13, on the needle point control stick fixing hole of control stick fixed cap 12, be provided with female thread, on needle point control stick, be provided with the external screw thread matching with female thread.

Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of power claimed range of the present invention.

Claims

1. a biopsy needle, is characterized in that: comprise needle tubing (1), temperature sensing device and sampler;

On the needle tubing wall of described needle tubing (1) near needle point one end, have vertically through hole (2), be along the circumferential direction also provided with an annular groove (3) near on the needle tubing wall of needle tip;

Described temperature sensing device comprises temperature inductor (4), temperature inductor control stick (7) and the connecting rod (6) that is connected temperature inductor (4) and temperature inductor control stick (7), the middle part of temperature inductor (4) is articulated with on the needle tubing wall at through hole (2) top and forms lever construction, temperature sense probe (5) is positioned at one end of temperature inductor (4), the other end of temperature inductor (4) is articulated with the upper end of connecting rod (6), the lower end of connecting rod (6) is articulated with the upper end of temperature inductor control stick (7), the lower end of temperature inductor control stick (7) connects temperature indicator (8),

Described sampler comprises sampler barrel (9), sampling cutter (10) and sampling cutter control stick (11), sampler barrel (9) is vertically fixedly installed on temperature inductor (4), when temperature inductor (4) is unfolded, the open end of sampler barrel is concordant with annular groove (3), sampling cutter (10) is for crescent and be positioned at annular groove (3), sampling cutter control stick (11) is arranged in needle tubing with the mode single-degree-of-freedom that can rotate around its axis, sampling cutter control stick (11) one end is fixedly connected with the handle of a knife of sampling cutter (10), the other end is fixedly connected with rotary knob.

2. biopsy needle according to claim 1, is characterized in that: described through hole (2), temperature sensing device and sampler are multiple and are along the circumferential direction uniformly distributed.

3. biopsy needle according to claim 2, is characterized in that: described biopsy needle tail end is provided with control stick fixed cap (12).

4. biopsy needle according to claim 3, it is characterized in that: the needle point (13) of described biopsy needle is with can be along being placed in needle tubing in the axially movable mode of needle tubing, in needle tubing, be also provided with vertically needle point control stick (14), needle point control stick (14) is fixedly connected with needle point (13), on the needle point control stick fixing hole of control stick fixed cap (12), be provided with female thread, on needle point control stick, be provided with the external screw thread matching with female thread.