WO2019119991A1

WO2019119991A1 - Separable electrically-conductive connection member and intelligent anastomotic device with viewing function

Info

Publication number: WO2019119991A1
Application number: PCT/CN2018/113477
Authority: WO
Inventors: 聂泳忠; 王玉龙
Original assignee: 西人马（厦门）科技有限公司
Priority date: 2017-12-20
Filing date: 2018-11-01
Publication date: 2019-06-27
Also published as: CN108186069A

Abstract

A separable electrically-conductive connection member comprises a first connection member (10) and a second connection member (20). The first connection member (10) comprises a first main body (11) having a hollow cavity. An inner surface of the first main body (11) is provided with a plurality of electrically-conductive contacts (12) arranged at intervals in an axial direction of the first main body (11). The second connection member (20) comprises a second main body (21) and an insert (22) provided inside the second main body (21). The insert (22) is coaxial with and insulated from the second main body (21). An outer surface of the insert (22) is provided with a plurality of electrically-conductive portions (22a) arranged at intervals in an axial direction of the insert (22). The electrically-conductive portions (22a) are in contact with the electrically-conductive contacts (12) in a one-to-one manner, such that the first connection member and the second connection member are interconnected electrically. Also provided is an intelligent anastomotic device with a viewing function. A photographing assembly (31) is electrically connected to the intelligent anastomotic device to realize viewing of a surgical process, such that a surgeon can monitor a surgical process in real time, thereby reducing a workload of the surgeon while reducing postoperative complications of a patient, and facilitating postoperative recovery of the patient.

Description

Plug-in conductive connector and visual intelligent stapler

Cross-reference to related applications

This application claims the benefit of priority to the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the disclosure.

Technical field

The present invention relates to the field of medical auxiliary device technology, and in particular to a plug-in conductive connector and a visual intelligent stapler including the plug-in conductive connector.

Background technique

The stapler is an alternative manual suture device used in clinical surgery. The main working principle is to use the nail to break or anastomize the tissue, similar to a stapler. At present, the stapler used in clinical practice is more and more favored and praised by domestic and foreign clinical surgical operators because of its advantages of quick suturing and simple operation.

However, when the operator uses the existing tubular stapler for anastomosis of the esophagus, stomach, and intestine, the operator cannot monitor the surgical procedure in real time due to the different constitutions of different patients, and this difference cannot be known. According to the magnitude of the squeezing force, problems such as poor nailing, tissue bleeding, gargle, etc. can not be found in time, and can only be found through subsequent gastroscopy, colonoscopy, etc., and the examination cost is high, and professional and equipment support is required. In addition, the stomach, intestines, esophagus and other tissues must be carefully examined before firing the nails to prevent them from being caught in the anastomosis. It is gentle to exit the stapler and check whether the cut tissue is a complete ring. The workload of the operator is easy to make mistakes and affect the effect of the treatment.

In addition, since the tubular stapler generally has a slender and narrow structure, the abutment and the main assembly are separated, and it is difficult to arrange components such as a camera in the stapler, which also increases the difficulty of visualizing the anastomosis.

Summary of the invention

It is an object of embodiments of the present invention to provide a plug-in conductive connector that can be quickly energized and de-energized by a simple plug-and-pull action.

Another object of the embodiments of the present invention is to provide a visual smart stapler including the above-described plug-in conductive connector, which can electrically connect the camera assembly to the plug-in conductive connector, thereby realizing visualization of the anastomosis procedure.

In one aspect, a plug-in conductive connector is provided according to an embodiment of the invention, comprising: a first connector comprising a first body having a cavity, the inner surface of the first body being spaced apart from each other in the axial direction a conductive contact; and a second connecting member removably connected to the first connecting member, the second connecting member comprising a second body and an insert coaxially and insulated from the second body, the outer surface of the insert The plurality of conductive portions are disposed at an axial interval, and the conductive portions are in contact with the conductive contacts in a one-to-one relationship to electrically conduct the first connecting member and the second connecting member.

In another aspect, an embodiment of the present invention provides a visual intelligent stapler including an anvil assembly, a body assembly, and a control module, the anvil assembly including a hollow shaft extending along a central axis thereof, the body assembly including the housing and the setting The central rod inside the housing further includes: a plug-in conductive connecting member as described above, the hollow shaft is connected to the first connecting member, one end of the central rod is connected to the second connecting member, and the plug-in conductive connecting member and the control module are The camera assembly is disposed inside the abutment assembly, and the camera assembly is electrically connected to the first connector to obtain image information of the human body tissue at the surgical site.

The plug-in conductive connecting member provided by the embodiment of the present invention enables the first connecting member of the pluggable connection by contacting the conductive contact in the first connecting member with the conductive portion in the second connecting member in one-to-one correspondence The two connecting members are electrically connected, and are convenient for integrating various circuit components, sensors and the like in the device including the plug-in conductive connecting member, so as to be applied to a situation where a quick plug-in operation is required to realize rapid energization and power-off. In addition, the visual intelligent stapler including the plug-in conductive connector provided by the embodiment of the present invention electrically connects the camera assembly and the plug-in conductive connector to realize visualization of the surgical procedure, so that the operator can monitor the surgical procedure in real time. The problem of adverse reactions such as the patient is found in time, the workload of the operator is reduced, the postoperative complications of the patient are reduced, and the postoperative recovery of the patient is accelerated.

DRAWINGS

The invention can be better understood from the following description of the embodiments of the invention, in which:

Other features, objects, and advantages of the invention will be apparent from the description of the accompanying drawings.

1 is a schematic structural view of a plug-in conductive connecting member according to an embodiment of the present invention;

2 is a schematic structural view of an insert in the pluggable conductive connector shown in FIG. 1;

3 is a schematic exploded view of the plug-in conductive connection member shown in FIG. 1;

4 is a schematic structural diagram of a visual intelligent stapler according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another visual intelligent stapler according to an embodiment of the present invention.

In the picture:

First connecting member-10; first body-11; first annular section -11a; second annular section -11b; first end -11c; through hole -11d; first receiving portion -11e; Annular spring piece-13; recessed portion-13a; first sealing member-14; first lip portion-14a;

Second connector-20; second body-21; insertion end-21a; groove-21b; second receiving portion-21c; insert-22; conductive portion -22a; positioning shoulder -22b; -22c; second seal -23; second lip -23a;

Abutment assembly -30; camera assembly -31; hollow shaft -32;

Main assembly-40; housing-41; limit portion - 41a; center rod - 42; pressure sensor - 43, 43'; display - 44; handle - 45; adjustment mechanism - 50; extension - 51.

Detailed ways

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth However, it will be apparent to those skilled in the art that the present invention may be practiced without some of the details. The following description of the embodiments is merely provided to provide a better understanding of the invention. The present invention is in no way limited to any specific configurations and algorithms as set forth below, but without departing from the spirit and scope of the invention. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessary obscuring the invention.

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be embodied in a variety of forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and fully convey the concept of the example embodiments. To those skilled in the art. In the figures, the thickness of the regions and layers may be exaggerated for clarity. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Referring to FIG. 1 and FIG. 2, an embodiment of the present invention provides a plug-in conductive connector including a first connector 10 and a second connector 20.

The first connector 10 includes a first body 11 having a cavity, and the inner surface of the first body 11 is spaced apart from the axial direction by a plurality of conductive contacts 12. The first body 11 may be a tubular metal member or a plastic member having an inner surface embedded with a silicone member including a conductive contact 12. In consideration of the processing technology, when the first body 11 is a tubular metal member, the silicone member including the conductive contact 12 may be integrally molded with the plastic member, and then the plastic member is coaxially fitted into the first body 11.

The second connecting member 20 is detachably connected to the first connecting member 10, and the second connecting member 20 includes a second body 21 and an insert 22 coaxially and insulatedly disposed in the second body 21, the outer surface of the insert 22 A plurality of conductive portions 22a are disposed along the axial direction of the first conductive member 22, and the conductive portions 22a are in contact with the conductive contacts 12 in a one-to-one relationship, so that the first connecting member 10 and the second connecting member 20 are electrically connected.

As an alternative embodiment, the insert 22 may be a columnar metal member, the outer surface of which is plated with an insulating layer, and the outer surface of the insulating layer may be plated with a plurality of annular conductive portions 22a.

As an alternative embodiment, the insert 22 may also be a columnar plastic member having a plurality of annular conductive portions 22a spaced apart from the outer surface.

As an optional implementation manner, the second body 21 may be a metal member or a plastic member, and the second body 21 and the insert 22 are integrally formed and insulated. When the second body 21 and the insert 22 are both metal parts, insulating silica gel may be filled between them to achieve an insulating connection. When the second body 21 is a plastic member, the insert 22 may be a metal member or a plastic member. The conductive portion 22a of the insert 22 is first processed and then integrally molded with the second body 21.

Referring to FIG. 3, the first body 11 has a first end 11c in the axial direction, and the outer circumference of the first end 11c is provided with a first annular section 11a and a second annular section 11b which are arranged in a stepwise manner, and the first annular section 11a is along the axis. The annular spring piece 13 is provided with a recessed portion 13a recessed into the cavity. The annular spring piece 13 further encloses the insertion space with the second annular section 11b, and the second body 21 has the ability to be inserted and removed. The insertion end 21a of the space, the outer peripheral surface of the insertion end 21a is provided with a recess 21b, and the recessed portion 13a is fitted into the recess 21b, so that the first connecting member 10 and the second connecting member 20 can be connected in a pluggable manner.

As an alternative embodiment, the angle of the longitudinal section of the recessed portion 13a to the two faces recessed in the cavity is designed to be less than or equal to 90°, so that the recessed portion 13a is easily inserted into the recess 21b in the axial direction, and Pulling out in the reverse is more difficult.

Further, the first connecting member 10 further includes a first sealing member 14. The cavity of the first body 11 is disposed with a through hole 11d surrounding the outer circumference of the insert 22 toward the first end 11c, and the first sealing member 14 is disposed at The through hole 11d is away from one side of the plurality of conductive contacts 12 to enclose the plurality of conductive contacts 12 in the cavity, preventing the plurality of conductive contacts 12 from being wetted or influent to affect their electrical conductivity.

Specifically, an annular first receiving portion 11e is disposed between the insertion space of the first body 11 and the inner surface, and the first sealing member 14 is provided with a first lip portion 14a, and the first lip portion 14a is embedded in the first receiving portion. Within 11e, a plurality of electrically conductive contacts 12 are enclosed within the cavity.

Further, the second connecting member 20 further includes a second sealing member 23, the insertion end 21a of the second body 21 is further provided with a second receiving portion 21c which is contracted in the radial direction, and the second sealing member 23 is provided with the second lip portion 23a The second lip portion 23a is sleeved on the circumferential side of the second receiving portion 21c to enclose the insert 22 in the second body 21, preventing the conductive portion 22a of the insert 22 from being wet or influent to affect its electrical conductivity.

Further, one end of the insert 22 closed by the second sealing member 23 is provided with a tapered head portion 22c, which can be inserted through the second sealing member 23, the first sealing member 14 and the through hole 11d in sequence until conductive The portion 22a is in one-to-one contact with the conductive contacts 12. After the first connector 10 and the second connector 20 are electrically connected, the second body 21 is inserted into the insertion space by the annular spring piece 13 and the second annular section 11b, and the ring spring is inserted. The sheet 13 is tightly pressed against the outer periphery of the second sealing member 23, so that the plug-in conductive connecting member provided by the embodiment of the invention has a good sealing effect after the plug-in conduction and improves the reliability.

Further, a position of the insert 22 is insulatively connected to the second body 21, and a positioning shoulder 22b is disposed. The two sides of the positioning shoulder 22b are spaced apart from each other by a plurality of conductive portions 22a. One side is in one-to-one contact with the conductive contacts 12 in the first connecting member 10, and the other side can be electrically connected to the control module through a cable, so that the first connecting member 10 and the second connecting member 20 can be electrically connected.

The plug-in conductive connecting member provided by the embodiment of the present invention makes the first pluggable connection by contacting the conductive contacts 12 in the first connecting member 10 with the conductive portions 22a in the second connecting member 20 in one-to-one correspondence. The connecting member 10 is electrically connected to the second connecting member 20, so as to facilitate integration of various circuit components, sensors and the like into the device including the plug-in conductive connecting member, so as to be applied to a simple plugging and unplugging action to realize fast energization and The occasion of power failure.

Referring to FIG. 4, an embodiment of the present invention further provides a visual intelligent stapler including an abutment assembly 30, a main body assembly 40 and a control module. The anvil assembly 30 includes a hollow shaft 32 extending along a central axis thereof, and the main assembly 40 includes a housing 41 and a center rod 42 disposed inside the housing 41. The visual intelligent stapler further includes: a plug-in conductive connector and a camera assembly 31 as described above.

The hollow shaft 32 is connected to the first connecting member 10. One end of the central rod 42 is connected to the second connecting member 20, and the plug-in conductive connecting member is electrically connected to the control module.

The camera assembly 31 is disposed inside the abutment assembly 30, and the camera assembly 31 is electrically connected to the first connector 10 to acquire image information of the human tissue of the surgical site.

In the embodiment of the present invention, the inner surface of the first body 11 of the first connecting member 10 is spaced apart from each other along the axial direction thereof with at least three conductive contacts 12, and the outer surface of the insert 22 of the second connecting member 20 At least three pairs of conductive portions 22a are disposed at intervals in the axial direction. The conductive portion 22a on the side of the positioning shoulder 22b and the conductive contact 12 are in contact with each other to form a conduction circuit, respectively corresponding to the power line, the signal line and the ground line of the camera assembly 31, and the other side of the positioning shoulder 22b. The conductive portion 22a is electrically connected to the control module through a cable. Thus, when the anvil assembly 30 is coupled to the body assembly 40 by the plug-in conductive connector, the camera assembly 31 within the abutment assembly 30 can be energized to capture image information of the patient's surgical site and pass, for example, but not The image is sent to the operating room screen for display in a manner limited to wireless sensing, thereby realizing visualization of the surgical operation process. In addition, the portion of the anvil assembly 30 that is in contact with the human tissue can be made of a transparent material such as, but not limited to, polycarbonate, plexiglass, etc., so that the camera assembly 31 can clearly capture an image of the surgical site of the patient.

The visual intelligent stapler provided by the embodiment of the present invention introduces a pluggable conductive connector between the abutment assembly 30 and the body assembly 40, so that the camera assembly 31 inside the abutment assembly 30 and the plug-in type The electrical connection of the conductive connectors realizes the visualization of the surgical procedure, enabling the operator to monitor the surgical procedure in real time, discovering problems such as adverse reactions in the patient, reducing the workload of the operator, and reducing the postoperative complications of the patient. , speed up the patient's postoperative recovery.

The internal structure of the visual intelligent stapler of the embodiment of the present invention is described in further detail below.

In the plug-in conductive connector of the visual smart stapler of the embodiment of the present invention, the first body 11 of the first connector 10 is a metal member, and the second body 21 of the second connector 20 is a metal member, and the insert 22 An insulating connection is achieved by filling the insulating silica gel with the second body 21.

As an alternative embodiment, the hollow shaft 32 of the anvil assembly 30 can be coupled to the first connector 10 by welding, and one end of the center rod 42 can be coupled to the second body 21 of the second connector 20 by welding.

As an alternative embodiment, the hollow shaft 32 may be integrally formed with the first connecting member 10, and the center rod 42 may be integrally formed with the second connecting member 20.

Further, the visual intelligent stapler provided by the embodiment of the present invention further includes an adjustment mechanism 50 that is screwed to the center rod 42. Specifically, the adjustment mechanism 50 includes a projecting portion 51 provided with an internal thread, and the projecting portion 51 is screwed to the center rod 42. After the first connecting member 10 and the second connecting member 20 are detachably connected, when the adjusting mechanism 50 is rotated, the center rod 42 drives the plug-in conductive connecting member to move in the axial direction in the housing 41.

Further, the housing 41 is provided with a limiting portion 41a sleeved on the outer side of the second connecting member 20. When the adjusting mechanism 50 is rotated in the clockwise direction, the central rod 42 drives the second connecting member 20 to extend the limit. The portion 41a is such that the second connecting member 20 is removably connected to the first connecting member 10; when the adjusting mechanism 50 is rotated in the counterclockwise direction, the center rod 42 drives the plug-in conductive connecting member to return to the limiting portion 41a. In order to limit the plug-in conductive connection in the circumferential direction. Thus, the anvil base assembly 30 and the main body assembly 40 are not easily disengaged in the axial direction and the circumferential direction, so that the force of the striking nail is uniform when the handle 45 is pushed by the handle, and the problem of poor stapling is prevented.

In addition, the visual smart stapler provided by the embodiment of the present invention further includes a pressure sensor 43 disposed at an end of the housing 41 of the main body assembly 40 at a position against the abutment assembly 30. The pressure sensor 43 can convert the pressure of the stomach tube or the intestinal tube tissue into an electrical signal, and the pressure value is sent to the operating room screen for display by wireless sensing through the control module inside the housing 41. And combined with the image picture taken by the camera assembly 31, it is convenient for the operator to correctly judge when the pressing is most accurate, to prevent the stomach tube or the intestinal tube tissue structure from being necrotic due to too much pressure or to cause side leakage due to too small pressure, etc. The possibility of complications.

Referring to FIG. 5, an embodiment of the present invention further provides a schematic structural diagram of another visual intelligent stapler. Most of the structure of the visual smart stapler is the same as described above, except that the pressure sensor is disposed in the middle of the center rod 42. The center rod 42 includes a first center rod 42' and a second center rod 42" disposed coaxially, and both ends of the pressure sensor 43' are coupled to the first center rod 42' and the second center rod 42", respectively. Since the force of the flesh tissue will act against the abutment assembly 30, and the anvil assembly 30 is integrally coupled with the first central rod 42', the pressure applied to the anvil assembly 30 can be measured by the first center. The tension applied to the pressure sensor 43' between the rod 42' and the second center rod 42" is achieved.

As an optional implementation, the visual intelligent stapler provided by the embodiment of the present invention further includes a display screen 44 disposed on the housing 41. The display screen 44 is electrically connected to the aforementioned pressure sensor 43 or 43', and the operator is operated. After the image taken by the camera unit 31 knows the condition of the patient's surgical site, the pressure value detected by the pressure sensor can be quickly seen without having to look up at the moment, and the operation efficiency of the anastomosis operation is improved.

Those skilled in the art will appreciate that the above-described embodiments are illustrative and not restrictive. Different technical features that appear in different embodiments can be combined to achieve a beneficial effect. Other variations of the disclosed embodiments can be understood and effected by those skilled in the <RTIgt; In the claims, the <RTIgt; "comprising"</RTI> does not exclude other means or steps; the indefinite article "a" or "an" order of. Any reference signs in the claims should not be construed as limiting the scope of the invention. The functions of the various parts appearing in the claims can be implemented by a single hardware or software module. The mere fact that certain features are recited in the claims

Claims

A plug-in conductive connector, comprising:

a first connecting member (10) comprising a first body (11) having a cavity, the inner surface of the first body (11) being axially spaced apart from each other with a plurality of conductive contacts (12);

a second connecting member (20) removably connected to the first connecting member (10), the second connecting member (20) including a second body (21) and coaxially and insulatedly disposed on the first An insert (22) in the body (21), the outer surface of the insert (22) is provided with a plurality of conductive portions (22a) spaced along the axial direction thereof, the conductive portion (22a) and the conductive contact The points (12) are in one-to-one contact to electrically conduct the first connector (10) and the second connector (20).
The plug-in conductive connector according to claim 1, wherein said first body (11) has a first end (11c) in said axial direction, and a periphery of said first end (11c) Provided with a first annular section (11a) and a second annular section (11b) arranged in a stepped manner, the first annular section (11a) is provided with an annular spring piece (13) along the axial direction, the ring spring The sheet (13) is provided with a recessed portion (13a) recessed into the cavity, the annular spring piece (13) further enclosing the insertion space with the second annular section (11b), the second body (21) having an insertion end (21a) capable of being inserted into the insertion and extraction space, a groove (21b) provided on an outer peripheral surface of the insertion end (21a), the recessed portion (13a) being embedded in the groove ( 21b) enables the first connector (10) to be pluggably connected to the second connector (20).
The plug-in conductive connector of claim 2, wherein the first connector (10) further comprises a first seal (14), the cavity of the first body (11) a through hole (11d) surrounding an outer circumference of the insert (22) is disposed in a direction toward the first end (11c), and the first seal (14) is disposed at the through hole (11d) away from the One side of the plurality of electrically conductive contacts (12) is described to enclose the plurality of electrically conductive contacts (12) within the cavity.
The plug-in conductive connector according to claim 3, wherein an annular first receiving portion (11e) is disposed between the insertion space of the first body (11) and the inner surface The first sealing member (14) is provided with a first lip portion (14a), the first lip portion (14a) being embedded in the first receiving portion (11e) to sandwich the plurality of conductive contacts (12) enclosed within the cavity.
The plug-in conductive connector according to claim 3, wherein the second connecting member (20) further comprises a second sealing member (23), the insertion end of the second body (21) (21a) further provided with a second receiving portion (21c) that contracts in the radial direction, the second sealing member (23) is provided with a second lip portion (23a), and the second lip portion (23a) is sleeved on a circumferential side of the second receiving portion (21c) to enclose the insert (22) in the second body (21).
The plug-in conductive connector according to claim 5, wherein one end of the insert (22) closed by the second seal (23) is provided with a tapered head (22c), a tapered head portion (22c) can be inserted through the second sealing member (23), the first sealing member (14) and the through hole (11d) in sequence until the conductive portion (22a) and the conductive portion The conductive contacts (12) are in one-to-one contact.
The plug-in conductive connector according to claim 1, wherein a position of the insert (22) insulatively connected to the second body (21) is provided with a positioning shoulder (22b), A plurality of conductive portions (22a) are disposed on both sides of the positioning shoulder (22b).
A visual intelligent stapler includes an anvil assembly (30), a body assembly (40) and a control module, the anvil assembly (30) including a hollow shaft (32) extending along a central axis thereof, The main assembly (40) includes a housing (41) and a center rod (42) disposed inside the housing (41), and further comprising:

The plug-in conductive connector according to any one of claims 1 to 7, wherein the hollow shaft (32) is connected to the first connecting member (10), and one end of the center rod (42) is connected to the first a connector (20), the plug-in conductive connector is electrically connected to the control module;

The camera assembly (31) is disposed inside the abutment assembly (30), and the camera assembly (31) is electrically connected to the first connector (10) to acquire image information of the human body tissue at the surgical site .
The visual intelligent stapler according to claim 8, wherein said hollow shaft (32) is connected to said first connecting member (10) by welding; said one end of said center rod (42) is welded Connected to the second body (21) of the second connector (20).
The visual intelligent stapler according to claim 8, wherein the hollow shaft (32) is integrally formed with the first connecting member (10), the center rod (42) and the second connecting member (20) One-piece molding.
The visual intelligent stapler according to claim 9 or 10, further comprising an adjusting mechanism (50) screwed to the center rod (42), wherein the housing (41) is further provided with a sleeve a limiting portion (41a) outside the second connecting member (20), when the adjusting mechanism (50) is rotated in a clockwise direction, the central rod (42) drives the second connecting member (20) extending the limiting portion (41a) such that the second connecting member (20) is removably coupled to the first connecting member (10); when the adjustment is rotated in a counterclockwise direction In the mechanism (50), the center rod (42) drives the plug-in conductive connection member to return to the limiting portion (41a).
A visual intelligent stapler according to claim 8, further comprising a pressure sensor (43) disposed at an end of said housing (41) of said body assembly (40) The control module is electrically coupled to the pressure sensor (43) at a location against the abutment assembly (30).
The visual smart stapler of claim 8 further comprising a pressure sensor (43'), said central rod (42) comprising a first central rod (42') and a second central rod disposed coaxially (42"), both ends of the pressure sensor (43') are respectively connected to the first central rod (42') and the second central rod (42"), the control module and the pressure sensor ( 43') Electrical connection.
The visual intelligent stapler according to claim 12 or 13, further comprising a display screen (44) disposed on the housing (41), the display screen (44) and the pressure sensor (43, 43') Electrical connection.