WO2011094524A1

WO2011094524A1 - Device for use in endoscopic resection

Info

Publication number: WO2011094524A1
Application number: PCT/US2011/022899
Authority: WO
Inventors: Ronald Anthony D' Onfro; Paul Robert Duhamel
Original assignee: Smith & Nephen, Inc.
Priority date: 2010-01-28
Filing date: 2011-01-28
Publication date: 2011-08-04
Also published as: WO2011094524A8

Abstract

The present disclosure relates to a device (10) for use in endoscopic resection. The device includes a handpiece assembly (12) including power receiving means and a motor assembly (11) removably coupled to the handpiece assembly, the motor assembly including power supply means for supplying electrical current to the power receiving means, wherein the motor assembly includes at least one spring (lid) for housing within a groove (12k) of the handpiece assembly to retain the motor assembly within the handpiece assembly.

Description

Device For Use In Endoscopic Resection

Cross-Reference to Related Applications

[0001] This application is a PCT International Application of United States Patent Application No. 61/299093, the disclosure of which is incorporated herein by reference in its entirety.

Background

1. Field of Technology

[0002] The present disclosure relates to a device for use in endoscopic resection, and specifically surgical handpieces that provide user friendly cleaning and sterilization.

2. Related Art

[0003] Surgical handpieces used to drive cutting tools during a surgical procedure, such as the handpiece and cutting tools shown in US Patent No. 5,871,493 ('493 patent), which is incorporated herein by reference in its entirety, are currently available. These handpieces have design features that make cleaning and sterilizing of the handpiece a challenge. Specifically, the areas around the cutting tool connection and the entry to the aspiration channel are hard to access and have a potential for not being properly cleaned prior to sterilization. Therefore, handpieces that lend themselves to user-friendly cleaning and sterilization are needed.

Summary

[0004] In one aspect, the present disclosure relates to a device for use in endoscopic resection. The device includes a handpiece assembly including power receiving means and a motor assembly removably coupled to the handpiece assembly, the motor assembly

including power supply means for supplying electrical current to the power receiving

means, wherein the motor assembly includes at least one spring for housing within a groove of the handpiece assembly to retain the motor assembly within the handpiece assembly.

[0005] In one embodiment, the handpiece assembly further includes a channel for housing of wires extending from the power receiving means to electrical components of the handpiece assembly. In another embodiment, the power receiving means is included in an opening of the handpiece assembly, the handpiece assembly further including a cover plate disposed within the opening. In yet another embodiment, the power receiving means is included in multiple openings of the handpiece assembly, the handpiece assembly further including multiple cover plates, the cover plates disposed within the openings. In a further embodiment, the handpiece assembly includes more than one channel, hi yet a further embodiment, the motor assembly includes a cable and a motor, the cable coupled to the motor, the power receiving means coupled to the cable.

[0006] Further features, aspects, and advantages of the present disclosure, as well as the structure and operation of various embodiments of the present disclosure, are described in detail below with reference to the accompanying drawings.

Brief Description of th e Drawings

[0007] The accompanying drawings, which are incorporated in and form a part of the specification, illustrate the embodiments of the present disclosure and together with the description, serve to explain the principles of the disclosure. In the drawings:

[0008] Figure 1 is an exploded view of the device for use in endoscopic resection of the present disclosure.

[0009] Figure 2 is a side cross-sectional view of the device of Figure 1.

[0010] Figure 3 is a top view of the device of Figure 1.

[0011] Figure 4 is an enlarged view of a portion of the device of Figure 3. [0012] Figure 5 is an enlarged view of another portion of the device of Fig. 3.

Detailed Description of the Embodiments

[0013] Figs. 1-5 show the device 10 of the present disclosure. The device 10 includes a motor assembly 11 and a handpiece assembly 12. The motor assembly 11 includes a motor 11a, a driveshaft lib coupled to a distal portion 11a' of the motor 11a, and a cable 11c coupled to a proximal portion 11a" of the motor 11a. The motor 11a also includes a spring lid on both the distal portion 11a' of the motor 11a and the cable 11c and power supply means lie coupled to the cable 11c. For the purposes of this disclosure, the springs lid are Bal Latch™ Canted-coil™ springs manufactured by Bal Seal Engineering, Inc. located in Foothill Ranch, California. However, other springs known to one of skill in the art may also be used. The springs lid are elastomeric and are coupled to the motor 11a and cable 11c via the use of the elastomeric action of the springs lid. However, as stated above, other spring, and therefore, other methods of coupling the springs to the motor assembly 11 may be used.

[0014] Also, for the purposes of disclosure, the power supply means lie includes mechanical electrical contacts. However, an inductive power transfer coil or coils or any other power supply means known to one of skill in the art may be used instead of the contacts lie. For the purposes of this disclosure, wires (not shown) in the cable 11c are coupled directly to the motor 11a via wires (not shown) in the motor 11a. This coupling of the cable and motor wires may be achieved via soldering or crimping the wires to each other. However, other methods of physically coupling the wires, known to one of skill in the art, may also be used. Alternatively, rather than the motor and cable wires being physically coupled to one another, it is possible to have an intermediate connector located between the motor and cable wires that would be used to couple the motor 11a and cable 11c. Furthermore, it is also possible for the motor to be wireless. In this instance, the cable wires would be coupled to the motor 11a via connectors located on the motor 11a. Wires (not shown) from the cable 11c are directly attached to the contacts lie. However, other methods of coupling the contacts lie to the cable 11c may also be used.

[0015] The handpiece assembly 12 includes a bore 12a for coupling of a surgical tool, pushbutton switches 12b that produce signals for use in controlling the motor 11a, an aspiration channel 12c, a spigot 12d coupled to the assembly 12 and located in-line with the channel 12c, and a valve 12e for controlling flow of tissue through the aspiration channel 12c. The assembly 12 also includes a cavity 12f for housing of the motor assembly 11, as shown in Fig. 3, grooves 12k for disposal of the springs lid, an opening 12g located on each side of the handpiece assembly 12 having power receiving means 12h located within the openings 12g, cover plates 12i for disposal within the openings 12g, and channels 12j for disposal of wires (not shown) for connecting the power receiving means 12h to the pushbutton switches 12b and other electronic components associated with the handpiece assembly 12. The ends of the channel wires (not shown) are directly connected, or hard wired, to both the power receiving means and the electronic components. In addition to serving to route the wires between the power receiving means 12h and the handpiece electronics, the channels 12j also serve the purpose of protecting the wires from cleaning agents and the effects of direct exposure to autoclave sterilization, as will be further explained below.

[0016] The cover plates 12i may be designed for snap-fit connection within the openings 12g. However, other methods of coupling the cover plates 12i to the openings 12g may be utilized. Similar to the power supply means lie, the power receiving means 12h includes a mechanical electrical contact. However, an inductive power transfer coil or coils or any other power receiving means known to one of skill in the art may be used instead of the contacts 12h. The grooves 12k are formed via a machining process. However, other methods of forming the grooves 12k may be used. While there are two grooves 12k and springs lid, it is within the scope of this disclosure to have more or less than two of either. For example, the motor assembly 11 may include at least one spring and at least one corresponding groove. The channels 12j are also formed via a machining process. However, other methods of forming the channels 12j may be used.

[0017] For the purposes of this disclosure, there are four power supply means lie, two on each side of the cable 11c. Similarly, there are four power receiving means 12h, two in each of the openings 12g. Having power supply means lie on each side of the cable 11c makes for the use of two channels 12j, one on each side of the handpiece assembly 12. Similarly, having two openings 12g makes for the use of two cover plates 12i. However, it is within the scope of this disclosure that the number of power supply and receiving means He, openings 12g, channels 12j, and cover plates 12i could vary to be more or less what is stated above. The cable, motor, and channel wires, as discussed throughout this disclosure, are any electrical wires that could be used to carry electrical current or signals. .

[0018] Upon disposal of the motor assembly 11 within the cavity 12f, the springs lid become housed within the grooves 12k to retain the motor assembly 11 within the handpiece assembly 12 and the power supply means lie and the power receiving means 12h come in contact with each other. Optionally, the motor assembly 11 and the handpiece assembly 12 may also include keying features, such as tabs and grooves, or other keying features that cooperate to substantially reduce the possibility of the assemblies 11,12 from rotating relative to each other. Upon connection of the cable 11c to a power unit, an electrical current flows through the cable 11c to the power supply means He, which, due to the mechanical contact between the means lle,12h, transfers the current to the power receiving means 12h, which, in turn, transfers the current to the wires (not shown) located between the power receiving means 12h and the handpiece electronics. Transfer of data from the handpiece electronics back to the power outlet also occurs via the use of the wires in the channels 12j and the cable wires connected to the power receiving means 12h, as previously discussed above. Operation of the device 10 with a surgical cutting tool is shown and described in the '493 patent and US Patent Application Serial No. 12/894828, both of which are incorporated herein by reference in their entireties.

[0019] After use of the device 10, removal of the motor assembly 11 from the handpiece assembly 12 may occur by either applying a force on the cable 11c at the proximal end 11a" of the motor assembly 11 or applying a force on the driveshaft lie at the distal portion 11a' of the motor assembly 11 to dislodge the springs lid from the grooves 12h. Once the motor assembly 11 is removed from the handpiece assembly 12, the entire motor assembly 11, and especially the distal portion 11a' of the assembly 11 and drive shaft lib, may be cleaned, thereby removing tissue that was otherwise trapped and inaccessible. Similarly, removal of the motor assembly 11 from the handpiece assembly 12 allows the user greater access to the cavity 12f, and especially the bore 12a, to clean the valve 12e, as well as the internal surfaces of the bore 12a where the driveshaft lib engages the cutting tool. Instruments, such as air hoses and other instruments, may be used to clean the assemblies 11,12.

[0020] Once the motor and handpiece assemblies 11,12 have been cleaned, the assemblies 11,12 may be separately sterilized using a steam autoclave or other sterilization instrument, thereby further reducing the risk of infection to a patient. Alternatively, the user may opt to reassemble the device 10 after the assemblies 11,12 have been cleaned and sterilize the device 10 as a unit.

Claims

What is Claimed Is:

1. A device for use in endoscopic resection comprising:

a handpiece assembly including power receiving means; and

a motor assembly removably coupled to the handpiece assembly, the motor assembly including power supply means for supplying electrical current to the power receiving

means,

wherein the motor assembly includes at least one spring for housing within a groove of the handpiece assembly to retain the motor assembly within the handpiece assembly.

2. The device of claim 1 wherein the handpiece assembly further includes a channel for housing of wires extending from the power receiving means to electrical components of the handpiece assembly.

3. The device of claim 1 wherein the power receiving means is included in an opening of the handpiece assembly, the handpiece assembly further including a cover plate disposed within the opening.

4. The device of claim 1 wherein the power receiving means is included in multiple openings of the handpiece assembly, the handpiece assembly further including multiple cover plates, the cover plates disposed within the openings.

5. The device of claim 2 wherein the handpiece assembly includes more than one channel.

6, The device of claim 1 wherein the motor assembly includes a cable and a motor, the cable coupled to the motor, the power receiving means coupled to the cable.