Scapular glenoid bone tunnel preparation positioning guider for arthroscopic surgery

Abstract

The utility model discloses a scapular glenoid bone tunnel preparation positioning guider for arthroscopic surgery, which comprises a guider handle, a catheter I, a catheter II and a drill point, one end of the guider handle is fixedly provided with a hollow catheter I, the drill point for preparing a bone tunnel is inserted into the catheter I, the drill point is provided with an inner core and a depth limit mark, and the catheter II is provided with a depth limit mark. The inner core is taken out after the bone tunnel is drilled, a pull wire can pass through the inner core for later use, a second hollow catheter is fixedly arranged above the first catheter in parallel, a guide rod playing a guiding role is sleeved with the second hollow catheter, the axis of the second catheter is parallel to the axis of the first catheter, and the inlet end of the second catheter is longer than the inlet end of the first catheter. By means of the ingenious design, high-precision positioning and guiding in the operation process are achieved, the accuracy and efficiency of the operation are effectively improved, the purposes that the bone tunnel is manufactured at a time, and repeated attempts and adjustment are not needed are achieved, the manufacturing quality of the bone tunnel is improved, the operation time is shortened, and meanwhile the operation risk and the occurrence rate of complications are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical machinery, concretely relates to a scapula glenoid bone tunnel preparation positioning guider for arthroscopic surgery. BACKGROUND

[0002] Shoulder instability can lead to different severity of capsular, glenohumeral ligament, glenoid lip, scapula glenoid and other soft tissue and bone pathological changes. In recent years, more and more scholars begin to pay attention to the evaluation of bone defect, rather than only focusing on soft tissue injury, because in the case of severe glenoid bone defect, the repair of soft tissue has a high failure rate. At present, it is generally believed that the bone augmentation surgery, such as coracoid process transposition, iliac bone transplantation, etc. is performed on the scapula glenoid bone defect of more than 20% to 25%. Iliac bone transplantation surgery has a history of more than 100 years, and has a definite effect. Traditionally, iliac bone transplantation surgery is completed by open surgery, but with the popularization and promotion of arthroscopic technology, some scholars try to complete the surgery under arthroscopy. However, due to the lack of special mirror operation auxiliary instrument, it is very difficult to complete iliac bone transplantation under arthroscopy.

[0003] The iliac bone block is fixed at the position of the defective scapula glenoid, and at present, the elastic fixation method is generally used, that is, a bone tunnel is prepared in the front-back direction of the scapula glenoid, a traction line is pulled out from the bone tunnel, and the iliac bone block is fixed in the front of the defective scapula glenoid by means of a micro steel plate. A bone tunnel is prepared in the front-back direction of the scapula glenoid, so it is urgent to develop a special positioning guider to accurately position the upper and lower positions of the bone tunnel and the depth under the cartilage. SUMMARY

[0004] The utility model aims at a scapula glenoid bone tunnel preparation positioning guider for arthroscopic surgery, to solve the problems of accurate positioning of the upper and lower positions of the bone tunnel and the depth under the cartilage in the existing surgery.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A scapula glenoid bone tunnel preparation positioning guider for arthroscopic surgery, comprising a guider handle, a catheter one, a catheter two and a drill needle, one end of the guider handle is fixedly provided with a hollow structure catheter one, a drill needle for preparing a bone marrow channel is inserted therein, the drill needle is designed with an inner core and a depth limiting mark, and the inner core can be taken out after drilling the bone channel, which can be used later through a traction line, a catheter two is fixedly arranged in parallel above the catheter one, a guide rod for guiding is sleeved in the catheter two, the axis of the catheter two is parallel to the axis of the catheter one, and the entering end of the catheter two is longer than the entering end of the catheter one.

[0007] Further, a scale line is marked on the outer wall of the catheter two, so that in the process of insertion, the catheter two can first contact and preliminarily position.

[0008] Further, the entering end of the guide rod is a sharp structure, which is hollow inside, facilitating the penetration of the fixed bone tissue, and the hollow structure inside allows the smooth insertion of the hollow guide needle in the later stage of the operation.

[0009] Further, the distance between the guide tube two and the guide tube one is 8mm.

[0010] Further, one end of the guide handle is fixedly provided with bracket one, the guide tube one is arranged on the bracket one, the guide tube two is fixedly arranged above the guide tube two in parallel, that is, the bracket two is fixedly installed above the guide tube two, and the guide tube two is fixedly arranged on the bracket two.

[0011] Further, the end of the guide tube one is flush with the end of the guide tube two.

[0012] Further, the diameter of the drill needle is equal to the inner diameter of the guide tube one, the head end of the drill needle is 5mm in spiral design to improve the efficiency of preparing the bone tunnel, the drill needle is designed with an inner core, the outer sleeve is connected through threads, the inner core can be taken out through the traction line, and the outer sleeve is designed with millimeter scales and depth limiting marks. The guide tube one in the utility model serves as a main guide channel, and ensures the accuracy and safety of the operation. Above the guide tube one, the guide tube two is fixedly arranged in parallel and closely, and the two complement each other and jointly constitute the core structure of the guide. The guide rod is cleverly sleeved in the guide tube two, the guide rod not only has high flexibility, but also plays a crucial guiding role in the operation process, helping the doctor to accurately aim at the target area.

[0013] Further, the drill needle is limited in depth in length, the maximum depth of the drill needle through the guide tube one is flush with the front end of the guide rod sleeved with the guide tube two, and important nerve and blood vessel tissues in front are avoided from being damaged

[0014] In addition, the axis of the guide tube two is strictly parallel to the axis of the guide tube one, and the design ensures the stability and consistency of the operation. In addition, in order to further improve the accuracy and convenience of the operation, the entering end of the guide tube two is cleverly designed to be longer than the entering end of the guide tube one, and such a design makes the doctor more easily control and adjust the depth of the guide tube in the operation process, so as to more accurately position the preparation position of the scapular glen bone tunnel. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is Figure 1 It is a structural schematic view of the utility model from another angle;

[0017] Figure 3 It is Figure 1 It is a structural schematic view of the drill needle and the sleeve;

[0018] Figure 4 For Figure 3 the cross-sectional view of A-A direction in the figure;

[0019] In the figure, 1. guide handle, 2. catheter one, 3. catheter two, 4. top wire, 5. guide rod, 6. fixed pin, 7. bracket one, 8. bracket two, 9. bracket three, 10. scale line, 11. drill needle-inner core, 12 drill needle-sleeve. DETAILED DESCRIPTION

[0020] As Figures 1-4 shown, a shoulder glenoid bone tunnel preparation positioning guide for arthroscopic surgery, including the guide handle 1 of ergonomic structure, catheter one 2, catheter two 3, one end of the guide handle 1 is fixedly provided with bracket one 7, bracket one 7 is provided with catheter one 2, the upper parallel fixed setting of catheter one 2 is provided with catheter two 3, i.e. in the upper of catheter two 3, bracket two 8 is fixedly installed with fixed pin 6, in order to stability, bracket two 8 and bracket three 9 can be fixedly installed in the upper of catheter two 3, bracket two 3 is fixedly arranged on bracket two 8 and bracket three 9, the axis of catheter two 3 is parallel with the axis of catheter one 2, the distance between the two catheters is 5mm, to ensure that the preparation angle of bone tunnel meets the operation requirements, neither too narrow to affect operation, nor too wide to cause inaccurate positioning. The entering end of catheter two 3 is longer than the entering end of catheter one 2, and the end of catheter one 2 is flush with the end of catheter two 3;Scale line 10 is provided on catheter two 3, so that catheter two 3 can contact and preliminarily position first during insertion, and then catheter one 2 follows, forming a stable guide channel. The outer wall of catheter two 3 is engraved with clear scale line 10, which provides intuitive depth reference for doctors, so that doctors can accurately control the depth of bone tunnel according to the operation needs, thereby greatly improving the accuracy and safety of operation. Catheter one 2 is matched with a special drill needle for preparing bone tunnel, the diameter of which is equal to the inner diameter of catheter one 2, the drill needle has a scale for depth limiting, and the inner core can be removed through the traction line after design. Catheter two 3 is sleeved with a guide rod 5 with a diameter of 4mm, a top wire 4 hole is provided on the end of catheter two 3, and the top wire 4 for fixing the guide rod 5 is installed in the hole, the end of the top wire 4 abuts against the guide rod 5, and the entering end of the guide rod 5 is a blunt structure, which is convenient for penetrating soft group and does not cause secondary damage.

[0021] The use and working principle of the utility model are as follows

[0022] During the operation, the doctor first determines the glenoid defect position under arthroscopic direct vision, then installs the glenoid bone tunnel preparation positioning guide in the operation site, and adjusts the angle and position of the positioning guide part to ensure that it is consistent with the predetermined bone tunnel direction.

[0023] The utility model has the following advantages in combination with the other two utility models

[0024] 1. Integrated design. Complete the glenoid autologous iliac block transplantation operation, from the autologous iliac block osteotomy, to the sending into the joint cavity with the fixed position, to the bone tunnel preparation, and finally to the line passing elastic fixation, the application of the other two utility models covers all the key steps of the whole operation process, the whole process design special operation instrument, constitutes integrated design, and the surgeon can complete all the operation steps according to the instrument operation manual.

[0025] 2. Standardized operation. Complete the glenoid autologous iliac block transplantation operation, if there is no special operation instrument, mainly rely on artificial handwork, or with the help of other simple instruments, the requirement of the operator is high, the subjectivity is strong, the operation path is unstable, and the repeatability is poor, the utility model and the other two utility models standardize each important operation link, which can effectively reduce the artificial error.

[0026] 3. Consideration of universality. The utility model and the other two utility models are designed based on arthroscopic minimally invasive surgery, and the instrument design pays more attention to delicacy and accuracy. All instruments have mm scale, and can be seamlessly connected with the existing arthroscopic minimally invasive surgery universal instrument and consumables, such as using a small swing saw to cut bone, passing in and out of the joint approach through the guide rod, using PDS wire or metal guide wire to take out the inner core, and using a micro steel plate to fix the transplanted iliac block.

Claims

1. A positioning guide for preparing a glenoid tunnel in arthroscopic surgery, characterized in that, The device includes a guide handle, a first catheter, a second catheter, and a drill bit. A hollow first catheter is fixedly installed at one end of the guide handle, and a drill bit for preparing a bone marrow tract is inserted inside it. The drill bit is designed with an inner core and a depth limit mark. After drilling the bone tract, the inner core can be removed and can be used later through a traction wire. A second catheter is fixedly installed parallel to the top of the first catheter. A guide rod that serves as a guide is installed inside the second catheter. The axis of the second catheter is parallel to the axis of the first catheter, and the entry end of the second catheter is longer than the entry end of the first catheter.

2. The arthroscopic surgical glenoid tunnel preparation positioning guide according to claim 1, characterized in that, The outer wall of the second catheter is engraved with scale lines and has a relatively long end, so that the second catheter can make initial contact and positioning during insertion.

3. The arthroscopic surgical glenoid tunnel preparation positioning guide according to claim 2, characterized in that, The guide rod has a pointed entry end with a hollow interior, which facilitates penetration and positioning of bone tissue. The hollow interior also allows for the smooth insertion of a hollow guide needle later in the surgery.

4. The arthroscopic surgical glenoid tunnel preparation positioning guide according to claim 3, characterized in that, The distance between catheter two and catheter one is 5mm.

5. The arthroscopic surgical glenoid tunnel preparation positioning guide according to claim 4, characterized in that, The diameter of the drill bit is equal to the inner diameter of the first catheter. The 5mm end of the drill bit has a spiral design to improve the efficiency of bone tunnel preparation. The drill bit is designed with an inner core, which is connected to the outer tube by a thread. The inner core can be removed through a traction line. The outer tube is designed with millimeter scales and depth limit marks. The maximum depth into which the drill bit guides the first catheter is flush with the front end of the guide rod of the second catheter.

6. The arthroscopic surgical glenoid tunnel preparation positioning guide according to claim 5, characterized in that, One end of the guide handle is fixedly provided with a bracket, a conduit is provided on the bracket, and a conduit is fixedly provided above the conduit, that is, a bracket is fixedly installed above the conduit, and a conduit is fixedly provided on the bracket.

7. The arthroscopic surgical glenoid tunnel preparation positioning guide according to any one of claims 1-6, characterized in that, The end of catheter one is flush with the end of catheter two.

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