Dura mater retraction auxiliary device

Abstract

The utility model discloses a dura mater retraction auxiliary device which comprises an operation channel cylinder and a positioning base, the positioning base is arranged outside the operation channel cylinder, a supporting arm is installed on the side wall of the positioning base, the supporting arm is fixedly connected with the positioning base, and the positioning base is fixedly connected with the operation channel cylinder. High-elasticity retraction rods are installed on the outer walls of the portions, on the two sides of the supporting arm, of the positioning base, the high-elasticity retraction rods are fixedly connected with the positioning base, the two sets of high-elasticity retraction rods are symmetrically installed, and high-elasticity retraction arms are installed at the bottom ends of the portions, on one side of the operation channel cylinder, of the high-elasticity retraction rods. According to the auxiliary device, convenient and fast handheld operation and use of the auxiliary device for retraction of the dura mater are achieved, the cut edge of the dura mater is conveniently hooked and expanded in a high-elasticity mode, the dura mater is effectively retracted and suspended in a limited operation space, and the operation visual field is conveniently and fully exposed to conduct deep surgery operation.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices, in particular to a dura mater retraction auxiliary device. Background Art

[0002] The dura mater, composed of dense connective tissue, is thick and tough, forming a long, cylindrical dural sac. It is attached to the edge of the foramen magnum above, continuous with the dura mater, and forms a blind end at the level of the second sacral vertebra. It is attached to the coccyx by the filum terminale. The dural sac contains cerebrospinal fluid, the spinal cord, and 31 spinal nerve roots. Each pair of spinal nerve roots is encased in the epineurium as it passes through the dural sac and is tightly connected to the connective tissue surrounding the intervertebral foramen, providing stability.

[0003] During spinal cord surgery, one of the prerequisites is to cut the dura mater. The dura mater needs to be pulled apart and suspended to two or more sides to fully expose the surgical field, reveal the lesions under the dura mater, compress the dura mater and the inner bone plate to control the bleeding of the extradural venous sinus and spinal plexus.

[0004] The common clinical method is to use a small round needle and a thin silk thread to pass through the gap between the inner and outer halves of the dura (spinal) mater or the dura (spinal) mater, pull up the dura mater, and then sew the silk thread to the periosteum at the edge of the bone window or the skin and muscle tissue on the surface. The operation is very cumbersome, especially for deep lesions, such as intraspinal lesions, where the operating space is limited and the surgeon is required to have good microsurgery skills.

[0005] If the needle is inserted too shallowly, it is easy to cut the dura mater, causing the thread to become unfastened, resulting in failure of retraction and suspension, and the need for retraction and suspension. If the needle is inserted too deep, it is easy to accidentally injure the blood vessels, brain tissue, spinal cord, nerve roots and other tissues under the dura mater. Once damaged, it will lead to irreversible consequences and cause serious sequelae and complications to the patient. This kind of injury is common during surgery. The retraction end and the fixed end need to be clamped and fixed with hemostatic forceps or small curved forceps or directly punctured and sutured on the skin or surgical towel, which is easy to contaminate and the clamping and fixation are not firm, and refixation is required. Traditional puncture, suspension, retraction and fixation of the dura mater is time-consuming, has potential risks, and is very cumbersome to operate, which brings great inconvenience to the physician. In the event of emergency surgery, a lot of precious rescue time will be wasted, especially in surgery for intraspinal lesions. Due to limited operating space, the dura mater cannot be effectively retracted and suspended, and the surgical field cannot be fully exposed, affecting deep surgical operations. Utility Model Content

[0006] The purpose of the present utility model is to provide a dura mater retraction auxiliary device to solve the problems proposed in the above background technology that the auxiliary device is not convenient for convenient handheld operation, is not convenient for highly elastically hooking and stretching the edge of the dura mater incision, cannot effectively retract the suspended dura mater within a limited operating space, and is not convenient for fully revealing the surgical field of view for deep surgical operations.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dura mater retraction auxiliary device, comprising a surgical channel tube and a positioning base, a positioning base being provided on the outside of the surgical channel tube, a support arm being installed on the side wall of the positioning base, and the support arm being fixedly connected to the positioning base, high-elastic retraction rods being installed on the outer walls of the positioning base on both sides of the support arm, and the high-elastic retraction rods being fixedly connected to the positioning base, and two groups of high-elastic retraction rods being symmetrically installed, the bottom ends of the high-elastic retraction rods on one side of the surgical channel tube are all installed with high-elastic retraction arms, and the high-elastic retraction arms are all extended to the outside of the surgical channel tube, the bottom ends of the high-elastic retraction arms are all installed with fishhook-shaped arms, and the fishhook-shaped arms are fixedly connected to the high-elastic retraction arms, a positioning arm is installed on one end of the support arm close to the surgical channel tube, a positioning block is symmetrically installed on the bottom end of the support arm on one side of the positioning arm, and the positioning block is slidably connected to the support arm, a threaded rod is movably installed on the side of the outer wall of the positioning block away from the positioning arm, and the threaded rod extends to the outside of the positioning base.

[0008] Preferably, the threaded rod is movably connected to the positioning base, a threaded sleeve is sleeved on the surface of the threaded rod on one side of the positioning base, and the threaded sleeve is fixedly connected to the positioning base, and the threaded sleeve is threadedly connected to the threaded rod.

[0009] Preferably, a handle is installed at one end of the threaded rod away from the positioning block, and the handle is fixedly connected to the threaded rod.

[0010] Preferably, an annular ring is provided on the surface of the surgical channel tube, and the annular ring is fixedly connected to the surgical channel tube.

[0011] Preferably, arc-shaped grooves are provided on the outer walls on both sides of the positioning base, and the arc-shaped grooves extend into the interior of the positioning base.

[0012] Preferably, the fishhook-shaped arm is a fishhook-shaped structure, and the length of the highly elastic retractor arm is greater than the length of the surgical channel tube.

[0013] Preferably, the length of the positioning block is twice the width, and the length of the positioning block is less than the distance from the top of the annular ring to the top of the surgical channel tube, and the length of the positioning block is equal to that of the positioning arm.

[0014] Preferably, a placement groove is provided on the side wall of the support arm, and the placement groove passes through to the outside of the support arm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: the auxiliary device not only realizes the convenient handheld operation of the dura mater retraction auxiliary device, facilitates the highly elastic hooking and stretching of the edge of the dura mater incision, but also effectively retracts and suspends the dura mater within a limited operating space, making it convenient to fully expose the surgical field for deep surgical operations;

[0016] The fishhook-shaped arm is used to conveniently hook the dura mater, and is pressed on the upper edge of the surgical channel tube with the cooperation of the positioning arm and the positioning block. The positioning arm and the positioning block have a certain length, and this length is the length of the gap. With the cooperation of the positioning arm and the positioning block, the relative height of the support arm and the surgical channel tube can be adjusted, thereby adjusting the relative height of the positioning base, the high-elastic retractor rod, the high-elastic retractor arm, the fishhook-shaped arm and the surgical channel tube, and adjusting the length of the fishhook-shaped arm extending from the lower edge of the surgical channel tube to adapt to different surgical depth requirements. After the surgical channel is established, the surgical channel tube is placed into the surgical channel. The dura mater is exposed in the surgical channel, and the dura mater is longitudinally incised. The fishhook-shaped arm is hooked on the edge of the incised dura mater. During the process of the high-elastic retraction arm returning to its original position, the incised dura mater can be retracted. The handle is rotated, and the handle drives the threaded rod to rotate. The threaded rod and the threaded sleeve cooperate to drive the threaded rod to move, and the threaded rod drives the positioning block to move. The positioning arm and the positioning block cooperate to fix the positioning base to the surgical channel tube. The dura mater retraction auxiliary device is simple and firm to operate, and solves the shortcomings of the current dura mater incision, suture and suspension operation, such as cumbersomeness and unstable fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the surgical channel tube of the present utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the threaded rod of the present invention;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the fishhook-shaped arm of the utility model;

[0021] Figure 5 This is a schematic diagram of the front cross-sectional structure of the high elastic retractor arm of the present invention;

[0022] Figure 6 This is a front view structural diagram of the utility model;

[0023] Figure 7 This is a schematic diagram of the top view of the structure of the utility model;

[0024] Figure 8 This is a schematic diagram of the three-dimensional structure of the positioning block of the utility model.

[0025] In the figure: 1. Surgical channel tube; 2. Fishhook-shaped arm; 3. Annular ring; 4. High-elastic retractor arm; 5. Positioning arm; 6. Positioning block; 7. Support arm; 8. Positioning base; 9. Handle; 10. Arc groove; 11. Threaded rod; 12. Threaded sleeve; 13. High-elastic retractor rod; 14. Placement groove. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0027] See also Figure 1-8 The utility model provides an embodiment: a dura mater retraction auxiliary device, including a surgical channel tube 1 and a positioning base 8, the surgical channel tube 1 is provided with a positioning base 8 on the outside, a support arm 7 is installed on the side wall of the positioning base 8, and the support arm 7 is fixedly connected to the positioning base 8, and high elastic retraction rods 13 are installed on the outer walls of the positioning base 8 on both sides of the support arm 7, and the high elastic retraction rods 13 are fixedly connected to the positioning base 8, and two groups of high elastic retraction rods 13 are symmetrically installed, and the bottom end of the high elastic retraction rod 13 on one side of the surgical channel tube 1 They are all equipped with highly elastic retractor arms 4, and the highly elastic retractor arms 4 are all extended to the outside of the surgical channel tube 1. The bottom ends of the highly elastic retractor arms 4 are all equipped with fishhook-shaped arms 2, and the fishhook-shaped arms 2 are fixedly connected to the highly elastic retractor arms 4. A positioning arm 5 is installed at one end of the support arm 7 close to the surgical channel tube 1. A positioning block 6 is symmetrically installed at the bottom end of the support arm 7 on one side of the positioning arm 5, and the positioning block 6 is slidably connected to the support arm 7. A threaded rod 11 is movably installed on the side of the outer wall of the positioning block 6 away from the positioning arm 5, and the threaded rod 11 extends to the outside of the positioning base 8;

[0028] The threaded rod 11 is movably connected to the positioning base 8. A threaded sleeve 12 is sleeved on the surface of the threaded rod 11 on one side of the positioning base 8. The threaded sleeve 12 is fixedly connected to the positioning base 8 and is threadedly connected to the threaded rod 11.

[0029] A handle 9 is installed at one end of the threaded rod 11 away from the positioning block 6, and the handle 9 is fixedly connected to the threaded rod 11. An annular ring 3 is sleeved on the surface of the surgical channel tube 1, and the annular ring 3 is fixedly connected to the surgical channel tube 1;

[0030] The outer walls of both sides of the positioning base 8 are provided with arc grooves 10, and the arc grooves 10 extend into the interior of the positioning base 8. All parts in the application document are made of metal materials;

[0031] The fishhook-shaped arm 2 is a fishhook-shaped structure. The length of the highly elastic retractor arm 4 is greater than the length of the surgical channel tube 1. The length of the positioning block 6 is twice the width, and the length of the positioning block 6 is less than the distance from the top of the annular ring 3 to the top of the surgical channel tube 1. The length of the positioning block 6 and the positioning arm 5 are equal. A placement groove 14 is provided on the side wall of the support arm 7, and the placement groove 14 extends to the outside of the support arm 7.

[0032] The fishhook-shaped arm 2 is used to conveniently hook the dura mater. There is a certain gap between the positioning arm 5 and the positioning block 6, and the gap matches the thickness of the upper edge of the surgical channel tube 1. Under the cooperation of the positioning arm 5 and the positioning block 6, the upper edge of the surgical channel tube 1 is pressed. The positioning arm 5 and the positioning block 6 have a certain length, and this length is the length of the gap. Under the cooperation of the positioning arm 5 and the positioning block 6, the relative height of the support arm 7 and the surgical channel tube 1 can be adjusted, thereby adjusting the relative height of the positioning base 8, the high-elastic retractor rod 13, the high-elastic retractor arm 4, the fishhook-shaped arm 2 and the surgical channel tube 1, and adjusting the length of the fishhook-shaped arm 2 extending from the lower edge of the surgical channel tube 1 to adapt to different surgical depth requirements. After the surgical channel is established, the surgical channel tube 1 is placed in the surgical channel to expose the dura mater, make a longitudinal incision of the dura mater in the surgical field, and place the fishhook-shaped arm 2 hooks the edge of the dura mater incision, and during the process of the high-elastic retracting arm 4 returning to its original position, the incised dura mater can be retracted, and the handle 9 is rotated, and the handle 9 drives the threaded rod 11 to rotate. Under the cooperation of the threaded rod 11 and the threaded sleeve 12, the threaded rod 11 is driven to move, and the threaded rod 11 drives the positioning block 6 to move. Under the cooperation of the positioning arm 5 and the positioning block 6, the positioning base 8 is fixed to the surgical channel tube 1. The dura mater retraction auxiliary device is simple to operate and firm, and solves the shortcomings of the current dura mater incision suture suspension operation, such as cumbersomeness and loose fixation, and realizes the convenient handheld operation of the dura mater retraction auxiliary device, facilitates the high-elastic hook to stretch the edge of the dura mater incision, effectively retracts and suspends the dura mater in a limited operating space, and facilitates the full exposure of the surgical field for deep surgical operations.

[0033] When the embodiment of the present application is used: first, the fishhook-shaped arm 2 is used to conveniently hook the dura mater, and the relative height of the support arm 7 and the surgical channel tube 1 can be adjusted with the cooperation of the positioning arm 5 and the positioning block 6, thereby adjusting the relative height of the positioning base 8, the highly elastic retractor rod 13, the highly elastic retractor arm 4, the fishhook-shaped arm 2 and the surgical channel tube 1, and adjusting the length of the fishhook-shaped arm 2 extending from the lower edge of the surgical channel tube 1 to adapt to different surgical depth requirements, and the surgical channel tube 1 is placed in the surgical channel to expose the dura mater, and a longitudinal incision is performed. The wild dura mater is hooked with the fishhook-shaped arm 2 to hook the edge of the incised dura mater. During the process of the high-elastic retracting arm 4 returning to its original position, the incised dura mater can be retracted. The handle 9 drives the threaded rod 11 to rotate, and the threaded rod 11 drives the positioning block 6 to move. With the cooperation of the positioning arm 5 and the positioning block 6, the positioning base 8 is fixed to the surgical channel tube 1. The dura mater retraction auxiliary device is easy to operate and firm, which solves the shortcomings of the current dura mater incision suture suspension operation, such as cumbersomeness and loose fixation, to complete the use of the auxiliary device.

[0034] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A dura mater retraction assist device, characterized in that: The invention comprises a surgical channel tube (1) and a positioning base (8), wherein the positioning base (8) is provided on the outside of the surgical channel tube (1), a support arm (7) is installed on the side wall of the positioning base (8), and the support arm (7) is fixedly connected to the positioning base (8), and high elastic retraction rods (13) are installed on the outer walls of the positioning base (8) on both sides of the support arm (7), and the high elastic retraction rods (13) are fixedly connected to the positioning base (8), and two groups of high elastic retraction rods (13) are symmetrically installed, and the bottom ends of the high elastic retraction rods (13) on one side of the surgical channel tube (1) are both installed with high elastic retraction arms (4), and the high elastic The retraction arms (4) are all extended to the outside of the surgical channel tube (1); the bottom ends of the highly elastic retraction arms (4) are all installed with fishhook-shaped arms (2), and the fishhook-shaped arms (2) are fixedly connected to the highly elastic retraction arms (4); the end of the support arm (7) close to the surgical channel tube (1) is installed with a positioning arm (5); the bottom ends of the support arms (7) on one side of the positioning arm (5) are symmetrically installed with positioning blocks (6), and the positioning blocks (6) are slidably connected to the support arms (7); a threaded rod (11) is movably installed on the side of the outer wall of the positioning block (6) away from the positioning arm (5), and the threaded rod (11) extends to the outside of the positioning base (8).

2. The dura mater retraction assisting device according to claim 1, characterized in that: The threaded rod (11) is movably connected to the positioning base (8); a threaded sleeve (12) is sleeved on the surface of the threaded rod (11) on one side of the positioning base (8); the threaded sleeve (12) is fixedly connected to the positioning base (8), and the threaded sleeve (12) is threadedly connected to the threaded rod (11).

3. The dura mater retraction assisting device according to claim 1, characterized in that: A handle (9) is installed at one end of the threaded rod (11) away from the positioning block (6), and the handle (9) is fixedly connected to the threaded rod (11).

4. The dura mater retraction assisting device according to claim 1, characterized in that: An annular ring (3) is sleeved on the surface of the surgical channel tube (1), and the annular ring (3) is fixedly connected to the surgical channel tube (1).

5. The dura mater retraction assisting device according to claim 1, characterized in that: Arc-shaped grooves (10) are provided on the outer walls of both sides of the positioning base (8), and the arc-shaped grooves (10) extend into the interior of the positioning base (8).

6. The dura mater retraction assisting device according to claim 1, characterized in that: The fishhook-shaped arm (2) is a fishhook-shaped structure, and the length of the highly elastic retracting arm (4) is greater than the length of the surgical channel tube (1).

7. The dura mater retraction assisting device according to claim 1, characterized in that: The length of the positioning block (6) is twice the width, and the length of the positioning block (6) is less than the distance from the top of the annular ring (3) to the top of the surgical channel tube (1), and the length of the positioning block (6) and the positioning arm (5) are equal.

8. The dura mater retraction assisting device according to claim 1, characterized in that: A placement groove (14) is provided on the side wall of the support arm (7), and the placement groove (14) penetrates to the outside of the support arm (7).

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