CN210330623U

Movatterモバイル変換

Info

Publication number: CN210330623U
Application number: CN201920509871.4U
Authority: CN
Inventors: 崔铁军; 栗亚
Original assignee: Amsino Medical Kunshan Co ltd
Current assignee: Amsino Medical Kunshan Co ltd
Priority date: 2019-04-15
Filing date: 2019-04-15
Publication date: 2020-04-17
Anticipated expiration: 2029-04-15

Abstract

An endoscope operating sheath comprises an outer sheath, an inner core and a pull wire. The inner core passes through the outer sheath, and the distal end of the inner core extends out of the outer sheath. The sheath comprises a hollow sheath body and a hollow operating handle; the operating handle comprises a rotating handle and a spiral moving piece; the distal end of the rotating handle is rotatably inserted into the proximal end of the sheath body; the helical moving piece is arranged in the sheath body and is in helical connection with the far end of the rotating handle. The near end of the pull wire is connected with the spiral moving piece, and the far end of the pull wire is connected with the far end of the sheath body; when the rotating handle rotates, the spiral moving piece and the pull wire move along the axial direction, so that the far end of the sheath body is bent. The utility model discloses can make operating personnel can obtain wider field of vision in the endoscope operation process.

Description

Endoscope operation sheath

Technical Field

The utility model relates to a medical surgical instrument, in particular to an endoscope operation sheath.

Background

The endoscope operation sheath is a common tool for urological examination or operation, and can be divided into a urethroscope operation sheath, a cystoscope operation sheath and the like. A common endoscopic operating sheath includes an outer sheath, an inner core, and a side tube. The inner core passes through the outer sheath, and the distal end of the inner core extends out of the outer sheath. The far end of the sheath is provided with a balloon which can be inflated or filled with liquid, the near end of the sheath is communicated with a side tube, and the side tube is provided with a Robert clamp to control the opening and closing of a liquid outlet of the side tube. When in use, the inner core is arranged in the outer sheath, the distal ends of the outer sheath and the inner core are inserted into the urethra and sent to the bladder, and the inner core is drawn out after urine flows out. Then the saccule is inflated or filled with liquid, so that the saccule is embedded in the neck opening of the bladder to avoid the outer sheath from falling off. The endoscope is then inserted into the outer sheath for the surgical procedure. The side tube serves as a leakage passage for the liquid in the bladder and functions to decompress the bladder.

The existing endoscope operating sheath has large observation limitation in the process of endoscope operation, and influences the efficiency and effect of the operation.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide an endoscope operation sheath which enables an operator to obtain a wider visual field in the operation process of the endoscope operation.

The utility model adopts the technical proposal that:

an endoscope operating sheath comprises an outer sheath and an inner core; the inner core passes through the outer sheath, and the far end of the inner core extends out of the outer sheath; the sheath comprises a hollow sheath body and a hollow operating handle; it is characterized in that the operating handle comprises a rotating handle and a spiral moving piece; the distal end of the rotating handle is rotatably inserted into the proximal end of the sheath body; the spiral moving piece is arranged in the sheath body and is spirally connected with the far end of the rotating handle; the endoscope operating sheath also comprises a pull wire, the proximal end of the pull wire is connected with the spiral moving piece, and the distal end of the pull wire is connected with the distal end of the sheath body; when the rotating handle rotates, the spiral moving piece and the pull wire move along the axial direction, so that the far end of the sheath body is bent.

The utility model discloses at least, have following advantage:

1. the endoscope operation sheath of the embodiment can drive the spiral moving piece and the pull wire to move along the axial direction by rotating the rotating handle, the pull wire can pull the outer sheath body to bend the far end of the outer sheath body, and the endoscope arranged in the outer sheath can also be bent along with the pull wire, so that an operator can obtain a wider visual field in the operation process of the endoscope operation, the accuracy of the operation is improved, and the operation efficiency is improved;

2. the utility model is simple in operation, convenient to use.

Drawings

Fig. 1 is a schematic external view showing an embodiment of an operating sheath for an endoscope of the present invention.

Fig. 2 and 3 are schematic sectional views of an embodiment of the operating sheath of the endoscope of the present invention from different angles, respectively.

Fig. 4 and 5 show partially enlarged schematic views of portions P and C of fig. 2, respectively.

Fig. 6 is a schematic cross-sectional view of an outer tube of an embodiment of an operating sheath of an endoscope of the present invention.

Fig. 7 is a schematic view of a handle holder barrel portion of an embodiment of an endoscope operating sheath of the present invention.

Fig. 8 shows a schematic view of a damping ring of an embodiment of the operating sheath of the endoscope of the present invention.

Fig. 9 shows a schematic view of a stop collar of an embodiment of the operating sheath of the endoscope of the present invention.

Detailed Description

For ease of description, the following description uses the terms "distal" and "proximal"; the far end is the end far away from the operation of a doctor; the near end is the end which is closer to the doctor to operate.

Please refer to fig. 1 to fig. 9. The endoscope operating sheath according to the embodiment of the utility model comprises aninner core 1, anouter sheath 2, aside tube 3 and astay wire 4.

Theinner core 1 passes through theouter sheath 2, and the distal end of theinner core 1 extends out of theouter sheath 2. Theinner core 1 comprises aninner tube 11, atube holder 12 and aguide head 13. Ahub 12 is attached to the proximal end of theinner tubing 11, thehub 12 being provided with a pull-tab 14 to facilitate withdrawal of theinner core 1 from theouter sheath 2. The proximal end of theguide head 13 is inserted and fixed in the distal end of theinner tube 11, and the distal end of theguide head 13 is conical and extends out of theouter sheath 2. The distal end of theinner core 1 is tapered in order to avoid damage when theinner core 1 is inserted into the urethra or bladder.

Thesheath 2 includes a hollow sheath body 2a and a hollow operation handle 2 b. The operation handle 2b includes arotating handle 21 and ascrew moving member 22. The distal end of therotating handle 21 is rotatably inserted into the proximal end of the sheath body 2 a; thescrew moving member 22 is provided in the outer sheath body 2a, and thescrew moving member 22 is screw-coupled to the distal end of therotary handle 21. In this embodiment, thescrew moving member 22 is a hollow screw, the hole wall of the central throughhole 210 of therotating handle 21 is provided with an internal thread matching with the external thread of thehollow screw 22, and thehollow screw 22 is inserted into the central throughhole 210 of therotating handle 21 and is spirally connected with therotating handle 21.

One end of theside tube 3 is communicated with the sheath body 2a, the other end of theside tube 3 is provided with adrainage interface 31, and theside tube 3 is provided with a Robertclamp 32 to control the opening and closing of thedrainage interface 31 of theside tube 3.

The proximal end of thepull wire 4 is connected with the helical movingmember 22, and the distal end of thepull wire 4 is connected with the distal end of the sheath body 2 a; when therotating handle 21 is rotated, thescrew 22 and the pullingwire 4 are moved in the axial direction, and the distal end of the sheath body 2a is bent. Optionally, the distal end of the sheath body 2a is provided with a groove or a throughhole 202 on the side thereof, so that the distal end of the sheath body 2a is easily bent when a force is applied.

In the present embodiment, the sheath body 2a includes acylindrical portion 23 and anouter tube 24. The distal end of therotary handle 21 is rotatably inserted into the proximal end of thebarrel portion 23, and thescrew moving member 22 is disposed in thebarrel portion 23. The proximal end ofouter tube 24 is inserted into the distal end ofbarrel 23 and attached tobarrel 23 by means including, but not limited to, adhesive bonding, snapping, etc. The end face of the proximal end of theouter tube 24 is provided with apull wire hole 240 extending along the axial direction, and thepull wire 4 extends into thepull wire hole 240 and is connected with the distal end of theouter tube 24. In this embodiment, the distal end of theouter tube 24 is sleeved with afixing ring 5, and thefixing ring 5 is connected to theouter tube 24 by means of, but not limited to, bonding, clipping, etc. Alternatively, thewire hole 240 is a through hole, and thewire 4 passes through thewire hole 240 and is connected to thefixing ring 5 after being inverted, for example, by welding. In order to ensure the strength of the pulling wire, the pullingwire 4 is preferably made of a metal pulling wire, and theouter tube 24 is preferably made of a non-metal elastomer, such as a PVC hose and a TPO hose, so that the distal end of theouter tube 24 is easily bent when being subjected to the pulling force of the pullingwire 4, and the outer tube itself has a certain rigidity.

Further, thebarrel 23 includes ahandle mount barrel 231 and an outertube mount barrel 232. The distal end of therotary handle 21 is rotatably inserted into the proximal end of the handle holdercylindrical body 231, and thescrew moving member 22 is disposed in the handle holdercylindrical body 231. The distal end of thehandle hub barrel 231 is provided with a plug-inconnector 2311, the plug-inconnector 2311 is inserted into the proximal end of theouter hub barrel 232 and connected with theouter hub barrel 232, and the proximal end of theouter tube 24 is inserted into the distal end of theouter hub barrel 232 and connected with theouter hub barrel 232, and the connection modes include, but are not limited to, bonding, clamping and the like.

Theballoon 25 is further arranged at a position close to the far end of the outer pipe, thebarrel part 232 of the outer pipe seat is provided with aninflation connector 233, and theinflation connector 233 is communicated with aninflation channel 241 arranged on the pipe wall of the outer pipe and used for inflating or filling theballoon 25.

Preferably, the endoscope operating sheath of the present embodiment further includes a damping pad fixed in the outer sheath body 2a, and a surface of the damping pad is in contact with theinner core 1 to generate a frictional force between the damping pad and the inner core when theinner core 1 axially moves, so that a hand feeling of an operator pulling theinner core 1 can be improved. The damping pad is made of a non-metal elastic material, such as silica gel.

In this embodiment, the damping pad is adamping ring 6, and the endoscope operating sheath further comprises a limitingring 7. Thedamping ring 6 and the limitingring 7 are arranged in a central hole of the plug-inconnector 2311 and are both sleeved outside theinner core 1. Thepull wire 4 passes through the gap between the outer peripheral surfaces of thedamping ring 6 and the limitingring 7 and the inner peripheral surface of the plug-inconnector 2311. Thedamping ring 6 is interference fitted with theinner core 1 to generate a frictional force between thedamping ring 6 and theinner core 1 when theinner core 1 moves axially. The outer peripheral surface of theretainer ring 7 is connected to the inner peripheral surface of the plug-inconnector 2311. The outer circumferential surface of the limitingring 7 is provided with aprojection 71 extending along the circumferential direction, the inner circumferential surface of theplug connector 2311 is provided with a slot matched with theprojection 71, and theprojection 71 is clamped in the slot. The outer peripheral surface of the dampingring 6 and the outer peripheral surface of the limitingring 7 are respectively provided with a firstsemicircular groove 61 and a secondsemicircular groove 72 for accommodating thepull wire 4, and the inner peripheral surface of the plug-inconnector 2311 is provided with a thirdsemicircular groove 2313 for accommodating thepull wire 4 at a position corresponding to thefirst groove 61 and thesecond groove 72.

The hole wall of the central hole of the plug-inconnector 2311 is provided with a stoppingportion 2312, and in the embodiment, the stoppingportion 2312 is a stopping step. Thestopper 2312 abuts against the proximal end surface of the dampingring 6 to limit the dampingring 6 from moving axially toward the proximal end of the inner core, and thestopper ring 7 abuts against the distal end surface of the dampingring 6 to limit the dampingring 6 from moving axially toward the distal end of the inner core.

When in use, theinner core 1 is firstly arranged in theouter sheath 2, theouter sheath 2 and the far end of theinner core 1 are inserted into the urethra and sent to the bladder, and theinner core 1 is drawn out after urine flows out. Then, theballoon 25 is inflated or filled with liquid, so that the balloon is embedded in the neck of the bladder after being expanded, and thesheath 1 is prevented from falling off. The endoscope is then inserted into theouter sheath 1 for the surgical procedure. By rotating therotating handle 21, thespiral moving part 22 and thepull wire 4 can be driven to move axially, the pull wire can pull the outer sheath body, so that the far end of the outer sheath body is bent, and an endoscope arranged in the outer sheath is also bent along with the bending, so that an operator can obtain a wider visual field in the operation process of the endoscope, and the accuracy of the operation is improved. Theside tube 3 serves as a leakage path for fluid in the bladder and serves to decompress the bladder.

The present embodiment has been described in conjunction with specific examples, but it will be understood by those of ordinary skill in the art that the present invention is not limited to the examples described herein, and that various modifications and changes may be made without departing from the spirit and scope of the present invention.

Claims

1. An endoscope operating sheath comprises an outer sheath and an inner core; the inner core passes through the outer sheath, and the distal end of the inner core extends out of the outer sheath; the sheath comprises a hollow sheath body and a hollow operating handle; the operating handle is characterized by comprising a rotating handle and a spiral moving piece; the distal end of the rotating handle is rotatably inserted into the proximal end of the sheath body; the spiral moving piece is arranged in the sheath body and is spirally connected with the far end of the rotating handle;

the endoscope operating sheath also comprises a pull wire, the proximal end of the pull wire is connected with the spiral moving piece, and the distal end of the pull wire is connected with the distal end of the outer sheath body; when the rotating handle rotates, the spiral moving piece and the pull wire move along the axial direction, so that the far end of the sheath body is bent.

2. The endoscope operating sheath of claim 1, wherein the outer sheath body includes a barrel portion and an outer tube; the distal end of the rotating handle is rotatably inserted into the proximal end of the barrel body, and the screw moving piece is arranged in the barrel body; the proximal end of the outer tube is inserted into the distal end of the barrel body and is connected with the barrel body; the end face of the near end of the outer tube is provided with a pull wire hole extending along the axial direction, and the pull wire extends into the pull wire hole and is connected with the far end of the outer tube.

3. The endoscope operating sheath according to claim 2, wherein a fixing ring is sleeved on a distal end of the outer tube, and the fixing ring is connected with the outer tube;

the pull wire hole is a through hole, and the pull wire penetrates through the pull wire hole and is connected with the fixing ring.

4. The endoscope operating sheath of claim 2 wherein the barrel portion comprises a handle mount barrel portion and an outer tube mount barrel portion; the far end of the rotating handle is rotatably inserted into the near end of the handle seat cylinder body, and the spiral moving piece is arranged in the handle seat cylinder body; the far end of the handle seat barrel body is provided with a plug-in connector which is inserted into the near end of the outer tube seat barrel body and is connected with the outer tube seat barrel body;

the near end of the outer tube is inserted into the far end of the barrel part of the outer tube seat and is connected with the barrel part of the outer tube seat.

5. The endoscope operating sheath of claim 4, wherein the endoscope operating sheath includes a damping ring and a stop ring; the damping ring and the limiting ring are arranged in a central hole of the plug-in connector and are sleeved outside the inner core, and the pull wire penetrates through a gap between the outer peripheral surfaces of the damping ring and the limiting ring and the inner peripheral surface of the plug-in connector; the damping ring is in interference fit with the inner core so as to generate friction force between the damping ring and the inner core when the inner core moves in the axial direction; the outer peripheral surface of the limiting ring is connected with the inner peripheral surface of the plug connector;

the wall of the central hole of the plug connector is provided with a stopping part; the stopping part abuts against the proximal end face of the damping ring to limit the damping ring to axially move towards the proximal end of the inner core, and the limiting ring abuts against the distal end face of the damping ring to limit the damping ring to axially move towards the distal end of the inner core.

6. The endoscope operating sheath of any one of claims 1 to 4, comprising a damping pad fixed in the outer sheath body, a surface of the damping pad being in contact with the inner core to generate a frictional force between the damping pad and the inner core when the inner core moves axially.

7. The operating sheath of claim 6, wherein the damping pad is made of a non-metallic elastic material.

8. An operating sheath for an endoscope according to any one of claims 1 to 4, wherein the distal end of the outer sheath body is provided with a recess or a through hole on its side.

9. The endoscope operating sheath according to any one of claims 1 to 4, wherein the screw moving member is a hollow screw, a hole wall of the central through hole of the rotary handle is provided with an internal thread which is engaged with an external thread of the hollow screw, and the hollow screw is inserted into the central through hole of the rotary handle and is screw-coupled with the rotary handle.

10. The endoscope operating sheath of any one of claims 1 to 4, wherein the inner core comprises an inner tube, a tube holder and a guide head; the tube seat is connected with the near end of the inner tube, and a handle is arranged on the tube seat; the proximal end of the guide head is inserted and fixed in the distal end of the inner tube, and the distal end of the guide head is conical and extends out of the outer sheath.