CN215384259U

CN215384259U - Blood vessel drag hook for laparoscopic surgery

Info

Publication number: CN215384259U
Application number: CN202120346867.8U
Authority: CN
Inventors: 谢耕晨; 帅晓明; 刘兴华
Original assignee: Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology; Union Hospital Tongji Medical College Huazhong University of Science and Technology
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2022-01-04
Anticipated expiration: 2031-02-07

Abstract

The utility model relates to the technical field of medical instruments, in particular to a laparoscopic surgery blood vessel retractor. It comprises a shell, a rotating assembly and a draw hook; the shell comprises a pipe body and a shell body, wherein a first end and a second end are respectively arranged at two ends of the pipe body, and the shell body is fixedly connected with the first end of the pipe body and communicated with the pipe body; the surface of the shell, which is far away from the pipe body, is provided with an opening; the rotating assembly is arranged in the shell and comprises a gear and a shaft lever, the shaft lever penetrates through the shaft center part of the gear and is fixedly connected with the gear, and two ends of the shaft lever are rotationally connected with the shell; the draw hook comprises a rod body and a hook; the two ends of the rod body are respectively a first end and a second end, and the rod body is arranged in the shell; a plurality of teeth meshed with the gear are fixed on the side surface of the first end of the rod body; the hook is fixedly connected with the second end of the rod body and is positioned outside the second end of the pipe body; the first handle is located in the opening of the housing, and the end of the first handle is fixedly connected with the shaft rod. The present invention can expose blood vessels to obtain a good surgical field.

Description

Blood vessel drag hook for laparoscopic surgery

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a laparoscopic surgery blood vessel retractor.

Background

At present, the patent of application No. CN201811338510.4 provides a laparoscopic retractor structure, in which the laparoscopic retractor includes a handle, a connecting rod and a hook head, the connecting rod is fixedly connected between the handle and the hook head, the hook head includes a fixing rod and a rotating rod, the upper end of the fixing rod is fixedly connected with the connecting rod, and one end of the rotating rod can relatively turn around one side of the upper end of the fixing rod; a torsion spring is arranged between the fixed rod and the rotary rod, and the rotary rod and the fixed rod form a push-pull plane after being turned over by the elasticity of the torsion spring; the grab handle is provided with a control switch, inner cavities communicated with each other are arranged in the connecting rod and the grab handle, pull wires are arranged in the inner cavities, one ends of the pull wires are connected with the rotating rods, the other ends of the pull wires are connected with the control switch, and the control switch drives the rotating rods to turn over relatively at the upper ends of the fixing rods through the pull wires. According to the laparoscope retractor, the rotary rods capable of being turned over relatively are arranged on the fixed rods, when the rotary rods are turned over to be parallel to the fixed rods, the push-pull planes are in a folded state, the retractor can conveniently extend into the abdominal cavity from the minimally invasive surgery opening quickly, and the surgery time is saved. However, the shape of the hook head of the laparoscopic retractor is L-shaped when the rotary rod is turned to be parallel to the fixed rod, and is linear when the rotary rod is turned to be perpendicular to the fixed rod, and the two shapes are not favorable for hooking blood vessels, so that the blood vessels are difficult to expose to obtain a good surgical field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a laparoscopic surgery blood vessel retractor, aiming at solving the problems that the shape of a hook head of the existing laparoscopic surgery retractor is L-shaped when a rotary rod is overturned to be parallel to a fixed rod, and is linear when the rotary rod is overturned to be vertical to the fixed rod, and the two shapes are not favorable for hooking blood vessels so as to expose the blood vessels to obtain a good surgery visual field.

The utility model provides a laparoscopic surgery blood vessel retractor, which comprises:

the shell comprises a pipe body and a shell body, wherein a first end and a second end are respectively arranged at two ends of the pipe body, and the shell body is fixedly connected with the first end of the pipe body and communicated with the pipe body; the surface of the shell, which is far away from the pipe body, is provided with an opening;

the rotating assembly is arranged in the shell and comprises a gear and a shaft lever, the shaft lever penetrates through the shaft center part of the gear and is fixedly connected with the gear, and two ends of the shaft lever are rotationally connected with the shell;

the draw hook comprises a rod body and a hook; the rod body is linear, a first end and a second end are respectively arranged at two ends of the rod body, and the rod body is arranged in the shell and can move along the extending direction of the pipe body; a plurality of teeth are fixed on the side surface of the first end of the rod body, are arranged along the length direction of the rod body and are meshed with the gear; the hook is fixedly connected with the second end of the rod body and positioned on the outer side of the second end of the pipe body, and the hook is arc-shaped;

a first handle positioned in the opening of the housing, an end of the first handle being fixedly connected to the shaft.

In one embodiment, the laparoscopic surgery blood vessel retractor further comprises a second handle fixedly connected with the outer surface of the shell, and the second handle and the first handle are positioned on the same plane.

In one embodiment, the laparoscopic surgery blood vessel retractor further comprises a roller assembly fixed on the inner surface of the tube body, the roller assembly and the teeth are respectively located on two opposite sides of the rod body, and the roller assembly is in contact with the side surface of the rod body.

In one embodiment, the number of the roller assemblies is multiple, and the multiple roller assemblies are arranged along the length direction of the rod body.

In one embodiment, the roller assembly includes:

the bottom surface of the base is fixedly connected with the pipe body, and the top surface of the base is provided with an installation groove;

the two ends of the connecting rod are fixedly connected with the groove wall of the mounting groove;

the central part of the rolling wheel is rotatably connected with the middle part of the connecting rod, the rolling wheel is separated from the base and protrudes out of the top surface of the base, and the rolling wheel is contacted with the side surface of the rod body.

In one embodiment, the laparoscopic surgery blood vessel retractor further comprises a guide plate and a guide piece;

the guide piece is fixed on the inner surface of the pipe body, a guide groove is formed in the surface, deviating from the pipe body, of the guide piece, and the guide groove extends along the length direction of the rod body;

the side surface of the guide plate is fixedly connected with the side surface of the rod body and is spaced from the teeth; the guide plate is located in the guide groove.

In one embodiment, the first handle comprises:

the two first connecting rods are positioned in the shell and are respectively positioned on two opposite sides of the gear; one end of each of the two first connecting rods is fixedly connected with the shaft rod;

one end of the second connecting rod is fixedly connected with the other end of one first connecting rod and is fixedly connected with the other end of the other first connecting rod; the second connecting rod is positioned in the opening;

and the handle part is fixedly connected with the other end of the second connecting rod and is positioned outside the shell.

In one embodiment, the second connecting rod, the handle portion and the two first connecting rods are integrally formed.

The utility model has the following beneficial effects: the casing can be handed to the user, stretches into the abdominal cavity with body and crotch from the operation opening, the inclination of adjustment body for the blood vessel in the abdominal cavity is colluded to the crotch, removes the first in command, makes the gear revolve, thereby the body of rod removes, and the crotch shrink makes the blood vessel expose in order to obtain good operation field of vision. The hook is arc-shaped and is bent towards the rod body, so that the hook is favorable for hooking the blood vessel.

Drawings

For the purpose of easy explanation, the present invention will be described in detail with reference to the following preferred embodiments and the accompanying drawings.

FIG. 1 is a schematic structural diagram of a blood vessel retractor for laparoscopic surgery according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a tubular body of the blood vessel retractor for laparoscopic surgery according to an embodiment of the present invention.

Description of reference numerals: 1. a housing; 11. a pipe body; 12. a housing; 2. a rotating assembly; 21. a gear; 22. a shaft lever; 3. pulling a hook; 31. a rod body; 32. hooking; 33. teeth; 4. a first handle; 41. a first connecting rod; 42. a second connecting rod; 43. a handle portion; 5. a second handle; 51. fixing the rod; 52. a hand-held portion; 6. a roller assembly; 61. a base; 62. a rolling wheel; 7. a guide plate; 8. a guide member; 81. a guide groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 and 2, in the present embodiment, a laparoscopic surgery blood vessel retractor includes a housing 1, a rotating member 2, a retractor 3, and a first handle 4.

The housing 1 includes a tube 11 and a case 12. The cross section of the pipe body 11 is circular, and both ends of the pipe body 11 are a first end and a second end, respectively. The pipe body 11 is linear, the length of the pipe body 11 is far larger than the diameter of the pipe body, the diameter of the pipe body 11 is smaller than 5mm, the shell 12 is provided with a cavity, and the shell 12 is fixedly connected with the first end of the pipe body 11 and communicated with the pipe body 11. An opening (not shown) is formed in a surface of the housing 12 facing away from the pipe body 11. The area of the housing 12 is larger than the cross-sectional area of the tubular body 11 in a plane perpendicular to the axial direction of the tubular body 11.

The rotating assembly 2 is mounted in a housing 12. Specifically, the rotating assembly 2 includes a gear 21 and a shaft 22. The gear 21 and the shaft 22 are both located in the housing 12.

The shaft 22 is inserted into the axial center of the gear 21, and the middle of the shaft 22 is fixedly connected to the gear 21. The shaft 22 is linear and both ends of the shaft 22 are rotatably connected to the housing 12.

The retractor 3 comprises a rod 31 and a hook 32.

The rod body 31 is linear, the two ends of the rod body 31 are respectively a first end and a second end, and the rod body 31 is arranged in the shell 1 and can move along the extending direction of the pipe body 11. A plurality of teeth 33 are fixed to a side surface of the first end of the rod 31, and the plurality of teeth 33 are arranged along the length direction of the rod 31 and engaged with the gear 21. The rod 31 is perpendicular to the shaft 22. The rod 31 may pass through an opening in the housing 12 or may be retracted into the housing 12. The rod 31 has a circular cross-section.

The hook 32 is fixedly connected to the second end of the rod 31 and is located outside the second end of the tube 11. The hook 32 is curved and bent in a direction close to the rod body 31. The hook 32 is substantially plate-shaped and has a curved surface. Specifically, the hook 32 is substantially C-shaped in cross section.

The first handle 4 is located in an opening in the housing 12, and the end of the first handle 4 is fixedly connected to the shaft 22.

Specifically, the first handle 4 includes a second connecting rod 42, a handle portion 43, and two first connecting rods 41.

The two first connecting rods 41 are both located in the housing 12 and located on two opposite sides of the gear 21; one end of each of the two first connecting rods 41 is fixedly connected to the shaft 22. The first connecting rod 41 may take an L-shape or a linear shape.

One end of the second connecting rod 42 is fixedly connected with the other end of one of the first connecting rods 41, and is fixedly connected with the other end of the other first connecting rod 41. The second connecting rod 42 is located in the opening. The cross-sectional area of the second connecting rod 42 is much smaller than the area of the opening of the housing 12 so that the first handle 4 can swing about the axis of the shaft 22. The second connecting rod 42 is linear, and the second connecting rod 42 is perpendicular to the shaft 22.

The handle portion 43 is fixedly connected to the other end of the second connecting rod 42 and is located outside the housing 12. The grip portion 43 is annular and is adapted to the shape and size of the finger.

Further, the second connecting rod 42, the handle portion 43 and the two first connecting rods 41 are integrally formed.

Optionally, the laparoscopic vascular retractor further comprises a second handle 5 fixedly connected to the outer surface of the housing 12.

The second handle 5 and the first handle 4 are located on the same plane. The second handle 5 comprises a fixed rod 51 and a hand-held part 52, wherein both ends of the fixed rod 51 are fixedly connected with the hand-held part 52 and the shell 12 respectively, and the handle is in a ring shape and is adaptive to the shape of fingers. That is, the hand-held portion 52 is fixedly connected to the housing 12 via the fixing rod 51. The second handle 5 is located directly below the first handle 4, illustrated in the orientation shown in fig. 1.

Optionally, the laparoscopic surgery blood vessel retractor further comprises a roller assembly 6 fixed to the inner surface of the tube body 11. The roller assembly 6 and the teeth 33 are respectively located at two opposite sides of the rod body 31, and the roller assembly 6 is in contact with the side surface of the rod body 31.

The number of the roller assemblies 6 is plural, and the plural roller assemblies 6 are arranged along the length direction of the rod body 31.

Specifically, the scroll wheel assembly 6 includes a base 61, a link (not shown), and a scroll wheel 62.

The bottom surface of base 61 and body 11 fixed connection, the mounting groove has been seted up to the top surface of base 61. The top and bottom surfaces of the base 61 are opposite surfaces of the base 61, respectively.

Both ends of the connecting rod are fixedly connected with the groove wall of the mounting groove.

The central part of the rolling wheel 62 is rotatably connected with the middle part of the connecting rod, the rolling wheel 62 is separated from the base 61 and protrudes out of the top surface of the base 61, and the rolling wheel 62 is contacted with the side surface of the rod body 31.

Optionally, the laparoscopic vascular retractor further comprises a guide plate 7 and a guide member 8.

The guide member 8 is fixed to the inner surface of the pipe body 11, and a guide groove 81 is formed in the surface of the guide member 8 facing away from the pipe body 11, and the guide groove 81 extends along the length direction of the rod body 31.

The side of the guide plate 7 is fixedly connected with the side of the rod 31 and is spaced from the teeth 33. The guide plate 7 is located in the guide groove 81. It is understood that the surface parallel to the thickness direction of the guide plate 7 is the side surface of the guide plate 7. The guide plate 7 stands on the side of the rod body 31.

In other embodiments, not shown, the blood vessel retractor for laparoscopic surgery further comprises an outer tube, wherein the tube body is arranged in the outer tube and is coaxially arranged with the outer tube, the tube body is rotatably connected with the outer tube, and the tube body can rotate around the axis of the outer tube. The hook and the housing are both located outside the outer tube.

The utility model has the beneficial effects that: the casing 12 can be handed to the user, stretches into the abdominal cavity with body 11 and crotch 32 from the operation opening, adjusts the inclination of body 11 for the blood vessel in the abdominal cavity is colluded to crotch 32, moves the first in command 4, makes gear 21 rotate, thereby the body of rod 31 removes, and the crotch 32 contracts, makes the blood vessel expose in order to obtain good operation field. The hook 32 is curved and bent toward the rod 31 to facilitate hooking the blood vessel.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A laparoscopic vascular retractor, comprising:

2. The laparoscopic surgery blood vessel retractor according to claim 1, further comprising a second handle fixedly connected to an outer surface of the housing, wherein the second handle and the first handle are located on the same plane.

3. The laparoscopic surgery blood vessel retractor according to claim 1, further comprising a roller assembly fixed to the inner surface of the tube body, wherein the roller assembly and the teeth are respectively located at opposite sides of the rod body, and the roller assembly is in contact with the side surface of the rod body.

4. The laparoscopic surgery blood vessel retractor according to claim 3, wherein the number of the roller assemblies is plural, and the plural roller assemblies are arranged along the length direction of the rod body.

5. The laparoscopic vascular retractor according to claim 3, wherein the roller assembly comprises:

6. The laparoscopic surgery blood vessel retractor according to claim 3, wherein the laparoscopic surgery blood vessel retractor further comprises a guide plate and a guide member;

7. The laparoscopic vascular retractor of claim 1, wherein the first handle comprises:

8. The laparoscopic vascular retractor of claim 7, wherein said second connecting rod, said handle portion and said first connecting rods are integrally formed.