Novel UA sleeve self-locking fixing device

Abstract

The utility model relates to a novel UA cannula self-locking fixing device, which belongs to the technical field of medical instruments and comprises a U-shaped cannula and an A-shaped cannula, the U-shaped cannula is used for ensuring accurate positioning and minimum trauma to tissues, and the A-shaped cannula is used for facilitating insertion of an endoscope; the U-shaped sleeve is arranged outside the A-shaped sleeve in a sleeving manner, and the A-shaped sleeve can be positioned through the U-shaped sleeve; the U-shaped casing pipe comprises a handle part I and a casing pipe I, a through hole is formed in the handle part I, and the casing pipe I is arranged in the through hole in a penetrating mode and connected with the handle part I in a welded mode; a locking button is further hinged to the handle part I. The U-shaped sleeve is detachably connected with the A-shaped sleeve through the locking button. In the operation process, the U-shaped sleeve matched with the visible trephine does not need to be pulled out and replaced, the operation efficiency is improved, the problem of positioning accuracy caused by sleeve replacement is solved, the operation safety is improved, the S-shaped port of the U-shaped sleeve and the handle part I have the direction identification degree, the U-shaped sleeve can be accurately and rapidly attached to the bone surface, and the operation operation is facilitated.

Description

Technical Field

[0001] The utility model relates to a novel UA sleeve self-locking fixing device, belonging to the technical field of medical equipment. Background Art

[0002] Transforaminal endoscopic lumbar disc surgery is a procedure that uses a camera system and an endoscope to make an incision of about 8 mm from the side or back of the patient's body, insert the surgical instrument or endoscope into the intervertebral foramen through the working cannula, and perform the surgery in the safe working triangle. The surgery is performed outside the annulus fibrosus of the intervertebral disc, and the protruding nucleus pulposus, nerve roots, dura mater sac and hyperplastic bone tissue can be clearly seen under direct endoscope vision. Then various forceps are used to remove the protruding tissue, remove the bone under the microscope, and use radiofrequency electrodes to repair the damaged annulus fibrosus. The surgery is minimally invasive, about the size of a soybean, with less than 20 ml of bleeding and only one stitch after the surgery. It is the minimally invasive treatment for intervertebral disc herniation with the least trauma to the patient and the best effect among similar surgeries. Transforaminal endoscopic lumbar disc surgery is mainly used to treat operations such as herniated disc, spinal stenosis, and bone hyperplasia. The probability of such injuries occurring is higher in the elderly and people who sit in offices for a long time.

[0003] Perforaminal endoscopic lumbar disc surgery was introduced to China at the beginning of this century. With the evolution of surgical methods, visual trephine saws have gradually replaced ordinary trephine saws to achieve visualized bone cutting operations and maximize surgical safety. However, the visual trephine saw requires a special protective sleeve to ensure accurate positioning and minimal trauma to tissues.

[0004] The whole surgical process is:

[0005] 1. Implant the protective sleeve into the patient's wound, place the visual ring saw into the protective sleeve, and use the visual ring saw to cut the bone at the surgical site;

[0006] 2. Take out the visual ring saw and then pull out the protective sleeve;

[0007] 3. Implant the working cannula and then place the endoscope into the working cannula;

[0008] 4. Use various forceps to remove protruding tissue, remove bone under the microscope, and use radiofrequency electrodes to repair damaged annulus fibrosus.

[0009] During the operation, the protective cannula needs to be removed and then the working cannula needs to be placed. The whole process is time-consuming and labor-intensive. Not only is the positioning inaccurate, but the repeated removal and implantation of the cannula increases the degree of trauma to the patient. Utility Model Content

[0010] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide a new UA cannula self-locking fixation device, which does not need to replace the protective cannula that cooperates with the visual ring saw during the operation, thereby improving the operation efficiency, solving the positioning accuracy problem caused by replacing the cannula, and improving the safety of the operation.

[0011] The novel UA sleeve self-locking fixing device described in the utility model comprises a U-shaped sleeve and an A-shaped sleeve, the U-shaped sleeve is used to cooperate with a visual ring saw to ensure accurate positioning and minimize trauma to tissues, and the function of the A-shaped sleeve is to facilitate the insertion of an endoscope; the U-shaped sleeve is sleeved on the outside of the A-shaped sleeve, and the A-shaped sleeve can be positioned by the U-shaped sleeve; the U-shaped sleeve comprises a handle part I and a sleeve I, the handle part I is provided with a through hole, the sleeve I is penetrated in the through hole, and is welded to the handle part I; a locking button is also hinged on the handle part I, and the U-shaped sleeve is detachably connected to the A-shaped sleeve through the locking button.

[0012] The technical solution of the utility model is to provide a novel UA sleeve self-locking fixing device, in which the U-shaped sleeve is sleeved on the outside of the A-shaped sleeve, and the A-shaped sleeve can be positioned by the U-shaped sleeve. There is no need to pull out and replace the sleeve during the operation, which reduces the surgical operation steps, improves the surgical efficiency, and improves the sleeve positioning accuracy.

[0013] Preferably, a rectangular groove is provided on the handle portion I, a locking button is arranged in the rectangular groove, and the locking button is rotatably connected to the handle portion I through a pin shaft.

[0014] Furthermore, a spring is provided in the rectangular groove, one end of the spring is hinged to the handle I, and the other end of the spring is hinged to the locking button. The spring can realize the accurate switch position of the locking button to prevent the locking button from moving incorrectly during the operation.

[0015] Preferably, the A-type sleeve comprises a handle II and a sleeve II, the handle II is provided with a through hole, the sleeve II is passed through the through hole and is welded to the handle II.

[0016] Furthermore, the locking button is provided with a boss, and one end of the handle II is provided with a slot matching the boss. When the boss of the locking button is rotated into the slot, the upper and lower positions of the A-type sleeve can be locked.

[0017] Furthermore, the handle part I is provided with an arc-shaped groove, and the arc-shaped groove matches with one end of the handle part II provided with a slot.

[0018] Preferably, locking screws are installed on both sides of the handle I, and steel balls are provided on the heads of the locking screws; pits are provided on both sides of the handle II, and the pits can cooperate with the steel balls on the locking screws to achieve positioning and locking of the A-type sleeve.

[0019] Furthermore, an S-shaped port is provided at the implantation end of sleeve I, and the longer side of the S-shaped port and the locking button are located on the same side of the U-shaped sleeve, and the position of the longer side of the S-shaped port can be identified according to the position of the locking button.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. During the operation, the utility model does not need to pull out and replace the U-shaped cannula that cooperates with the visual ring saw, which reduces the surgical operation steps and improves the surgical efficiency;

[0022] 2. Avoid positioning accuracy problems caused by replacing cannulas, reduce the degree of trauma to patients, and improve surgical safety;

[0023] 3. The S-shaped port and handle part I of the U-shaped cannula have direction recognition, which can accurately and quickly approach the bone surface, thereby protecting the nerves and facilitating surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the locking button of the utility model when it is in a locked state;

[0025] Figure 2 It is a structural schematic diagram of the locking button of the utility model when it is in a released state;

[0026] Figure 3 It is a cross-sectional view of the main view of the U-shaped casing;

[0027] Figure 4 It is the left view of the U-shaped casing;

[0028] Figure 5 It is a three-dimensional cross-sectional view of the A-type casing.

[0029] In the figure: 1. U-shaped sleeve; 11. Handle part I; 111. Rectangular groove; 112. Arc groove; 12. Locking button; 13. Pin; 14. Spring; 15. Locking screw; 16. Sleeve I; 161. S-shaped port; 2. A-type sleeve; 21. Handle part II; 211. Pit; 212. Slot; 22. Sleeve II. DETAILED DESCRIPTION

[0030] like Figure 1-5 As shown, this embodiment is implemented by the following technical solutions: it includes a U-shaped sleeve 1 and an A-shaped sleeve 2, the U-shaped sleeve 1 is used to cooperate with a visual ring saw to ensure accurate positioning and minimal trauma to the tissue, and the function of the A-shaped sleeve 2 is to facilitate the insertion of the endoscope; the U-shaped sleeve 1 is sleeved on the outside of the A-shaped sleeve 2, and the A-shaped sleeve 2 can be positioned by the U-shaped sleeve 1; the U-shaped sleeve 1 includes a handle Ⅰ11 and a sleeve Ⅰ16, the handle Ⅰ11 is provided with a through hole, the sleeve Ⅰ16 is inserted into the through hole, and is welded to the handle Ⅰ11; a locking button 12 is also hinged on the handle Ⅰ11, and the U-shaped sleeve 1 is detachably connected to the A-shaped sleeve 2 through the locking button 12.

[0031] In this embodiment, a rectangular groove 111 is provided on the handle portion I11, and a locking button 12 is arranged in the rectangular groove 111. The locking button 12 is rotatably connected to the handle portion I11 through a pin shaft 13; a spring 14 is also provided in the rectangular groove 111, one end of the spring 14 is hinged to the handle portion I11, and the other end of the spring 14 is hinged to the locking button 12. The spring 14 can realize the accurate switch position of the locking button 12 to prevent the position movement of the locking button 12 from being incorrect during the operation; the A-type sleeve 2 includes a handle portion II21 and a sleeve II22, a through hole is provided on the handle portion II21, and the sleeve II22 is penetrated in the through hole and is welded to the handle portion II21; the locking button 12 is provided with a boss, and one end of the handle portion II21 is provided with a slot 212 matching the boss, and when the boss of the locking button 12 is rotated into the slot 212, the upper and lower positions of the A-type sleeve 2 can be locked. The handle part I11 is also provided with an arc-shaped groove 112, which cooperates with one end of the handle part II21 with a slot; locking screws 15 are installed on both sides of the handle part I11, and the head of the locking screw 15 is provided with a steel ball; pits 211 are provided on both sides of the handle part II21, and the pits 211 can cooperate with the steel balls on the locking screws 15 to achieve the positioning and locking of the A-type sleeve 2; the implantation end of the sleeve I16 is provided with an S-shaped port 161, and the longer side of the S-shaped port 161 and the locking button 12 are located on the same side of the U-shaped sleeve 1, and the position of the longer side of the S-shaped port 161 can be identified according to the position of the locking button.

[0032] The method of using the utility model is:

[0033] 1. Implant the U-shaped cannula 1 into the wound of the patient, put the visual ring saw into the U-shaped cannula 1, and use the visual ring saw to cut the bone at the surgical site;

[0034] 2. Take out the visual trephine, insert the A-type casing 2 into the U-type casing 1, pre-tighten the locking screws 15 on both sides of the U-type casing 1, position the A-type casing 2, and turn the locking button 12 to lock the A-type casing 2 and the U-type casing 1;

[0035] 3. Place the endoscope into the A-type cannula 2, and then use various grasping forceps to remove protruding tissue, remove bone under the microscope, and use radiofrequency electrodes to repair damaged annulus fibrosus.

[0036] Of course, the above contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and any equivalent changes and improvements made by ordinary technicians in the technical field within the essential scope of the present invention shall fall within the scope of the patent coverage of the present invention.

Claims

1. A new type of UA casing self-locking fixing device, characterized in that: The invention comprises a U-shaped sleeve (1) and an A-shaped sleeve (2), wherein the U-shaped sleeve (1) is sleeved outside the A-shaped sleeve (2), and the A-shaped sleeve (2) can be positioned by the U-shaped sleeve (1); the U-shaped sleeve (1) comprises a handle part I (11) and a sleeve I (16), wherein the handle part I (11) is provided with a through hole, and the sleeve I (16) is passed through the through hole and is welded to the handle part I (11); a locking button (12) is also hinged on the handle part I (11), and the U-shaped sleeve (1) is detachably connected to the A-shaped sleeve (2) via the locking button (12).

2. The new UA sleeve self-locking fixing device according to claim 1 is characterized in that: The handle part I (11) is provided with a rectangular groove (111), a locking button (12) is arranged in the rectangular groove (111), and the locking button (12) is rotatably connected to the handle part I (11) via a pin shaft (13).

3. The new UA sleeve self-locking fixing device according to claim 2 is characterized in that: A spring (14) is arranged in the rectangular groove (111), one end of the spring (14) is hinged to the handle part I (11), and the other end of the spring (14) is hinged to the locking button (12).

4. The novel UA sleeve self-locking fixing device according to claim 1 is characterized in that: The A-type sleeve (2) comprises a handle II (21) and a sleeve II (22). The handle II (21) is provided with a through hole, and the sleeve II (22) is inserted into the through hole and connected to the handle II (21) by welding.

5. The novel UA sleeve self-locking fixing device according to claim 4 is characterized in that: The locking button (12) is provided with a boss, and one end of the handle II (21) is provided with a slot (212) matching with the boss.

6. The novel UA sleeve self-locking fixing device according to claim 5 is characterized in that: The handle part I (11) is provided with an arc-shaped groove (112), and the arc-shaped groove (112) matches with one end of the handle part II (21) provided with a clamping groove (212).

7. The novel UA sleeve self-locking fixing device according to claim 4 is characterized in that: Locking screws (15) are installed on both sides of the handle part I (11), and the heads of the locking screws (15) are provided with steel balls; and pits (211) for positioning and locking are provided on both sides of the handle part II (21).

8. The novel UA sleeve self-locking fixing device according to claim 1 is characterized in that: The implantation end of the sleeve I (16) is provided with an S-shaped port (161), and the longer side of the S-shaped port (161) and the locking button (12) are located on the same side of the U-shaped sleeve (1).

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