Guide trephine assembly for spine endoscopic surgery

Abstract

The utility model relates to the technical field of medical instruments, in particular to a guide trephine assembly for a spine endoscopic surgery. Comprising an ejector rod, an outer trephine piece, an endoscope sleeve and a connecting assembly, the outer trephine piece is movably connected with the endoscope sleeve, the ejector rod is connected with the endoscope sleeve, the connecting assembly comprises a connecting column, a reset spring, an extrusion block, a limiting arc block and an abutting spring, the connecting column is fixedly connected with the ejector rod, the endoscope sleeve is provided with a movable groove and a fixing hole, and the connecting column is provided with a groove. The extrusion block is fixedly connected with the ejector rod and located on the ejector rod, the extrusion block is matched with the movable groove, the reset spring is fixedly connected with the endoscope sleeve and located in the movable groove, the limiting arc block is movably connected with the connecting column and matched with the groove and the fixing hole respectively, and the two ends of the abutting spring are fixedly connected with the connecting column and the limiting arc block respectively. The ejector rod and the endoscope sleeve can be stably connected, and the outer ring saw piece can be conveniently taken outwards from the endoscope sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a guide ring saw assembly used for spinal endoscopic surgery. Background Art

[0002] At present, in some spinal endoscopic surgeries, part of the bone needs to be removed to establish a relatively spacious and free working channel for the operation. Especially in the most common lumbar disc herniation nucleus pulposus removal via the intervertebral foraminal approach, intervertebral foraminal expansion and plasty is often required. Simply put, it is to remove or grind part of the superior articular process by step-by-step circumcision, bone rasp or endoscopic drilling, so as to remove its obstruction or obstacle to the change of the angle of the endoscope, and then complete more complex surgical operations.

[0003] In the prior art patent CN210990563U, a guide ring saw assembly for spinal endoscopic surgery is disclosed. The endoscope sleeve is used for inserting the endoscope, and the endoscope can be inserted into and out of the endoscope sleeve. The outer ring saw piece is sleeved on the endoscope sleeve. Since the outer ring saw piece and the endoscope sleeve are clearance-matched, the diameter of the push rod is the same as the outer diameter of the endoscope sleeve. The front end of the push rod is provided with a guide head for inserting into the endoscope sleeve. After the guide head is inserted into the endoscope sleeve, the push rod can support the endoscope sleeve, and the staff can easily pull the outer ring saw piece outward; since the front end of the endoscope sleeve is provided with a sleeve portion Incision, after the endoscope is inserted into the front end of the endoscope sheath, the staff can see the human tissue inside the spine through the endoscope inserted into the sheath incision, so the endoscope sheath guides the outer ring saw piece, and the outer ring saw piece can move or rotate relative to the endoscope sheath; the sawtooth portion of the outer ring saw piece can remove human tissue such as the inferior articular convexity, and the front end of the outer ring saw piece is provided with an inclined outer ring saw incision, and the staff can see the human tissue inside the posterior spine through the endoscope at the outer ring saw incision, which is convenient for avoiding dangerous areas and protecting human tissue.

[0004] In the above-mentioned prior art patent, the guide head on the push rod is inserted into the endoscope sleeve, and the outer ring saw piece is pulled outward. However, long-term repeated use may easily cause the guide head to become loose when connected to the endoscope sleeve, which will affect the removal of the outer ring saw piece from the endoscope sleeve. Utility Model Content

[0005] The utility model aims to provide a guide ring saw assembly for spinal endoscopic surgery, which solves the problem that the guide head on the top rod is easily loosened when connected to the endoscope sleeve, which affects the external ring saw component being taken out of the endoscope sleeve.

[0006] To achieve the above-mentioned purpose, the utility model adopts a guide ring saw assembly for spinal endoscopic surgery, comprising a push rod, an outer ring saw piece, an endoscope sleeve and a connecting assembly, wherein the outer ring saw piece is movably connected to the endoscope sleeve and is sleeved on the outside of the endoscope sleeve, the push rod is connected to the endoscope sleeve, the connecting assembly comprises a connecting column, a reset spring, an extrusion block, a limit arc block and a holding spring, the connecting column is fixedly connected to the push rod, and the connecting column is also adapted to the endoscope sleeve, the endoscope sleeve has a movable groove and a fixing hole, the connecting column has a groove, the extrusion block is fixedly connected to the push rod and is located on the push rod, and the extrusion block is adapted to the movable groove, the reset spring is fixedly connected to the endoscope sleeve and is located in the movable groove, the limit arc block is movably connected to the connecting column and is respectively adapted to the groove and the fixing hole, and the two ends of the holding spring are respectively fixedly connected to the connecting column and the limit arc block and are located in the groove.

[0007] Wherein, the connecting assembly further comprises a guide arc block, which is fixedly connected to the connecting column and is located at an end of the connecting column away from the push rod.

[0008] Wherein, the connecting assembly also includes a movable block, which is movably connected to the endoscope sleeve and is located in the movable groove. The movable block is also fixedly connected to the reset spring.

[0009] The guide ring saw assembly for spinal endoscopic surgery further comprises a protection assembly, wherein the push rod, the outer ring saw element and the endoscopic sleeve are all arranged in the protection assembly.

[0010] Among them, the protection component includes a protection bag, multiple rubber jackets and multiple positioning arc blocks. The multiple rubber jackets are fixedly connected to the protection bag and are all located inside the protection bag. The push rod, the outer ring saw and the endoscope sleeve are respectively connected to the corresponding rubber jackets. Each positioning arc block is respectively fixedly connected to the corresponding rubber jacket and is respectively located above the rubber jacket.

[0011] Wherein, the protection component further includes a plurality of extruded sponges, each of which is fixedly connected to the corresponding rubber jacket and is respectively located on the inner side wall of the rubber jacket.

[0012] The utility model discloses a guide ring saw assembly for spinal endoscopic surgery. When the push rod is connected to the endoscope sleeve, the connecting column on the push rod is inserted into the endoscope sleeve. At the same time, the extrusion block on the push rod enters the movable groove of the endoscope sleeve and squeezes the reset spring. In addition, the limiting arc block is squeezed by the endoscope sleeve and enters the groove to squeeze the holding spring. When the push rod is fitted with the endoscope sleeve, the limiting arc block is pushed into the fixed groove of the endoscope sleeve by the action force of the holding spring. The push rod is inserted into the hole, thereby completing the connection and fixing of the push rod and the endoscope sleeve, and then the outer ring saw piece is pulled out from the endoscope sleeve; when the push rod and the endoscope sleeve are disassembled, the limit arc block is pressed to make the limit arc block enter the groove of the connecting column. At this time, the push rod is separated from the endoscope sleeve by pushing the extrusion block outward through the action of the reset spring. Through the above method, it is achieved that the push rod and the endoscope sleeve are firmly connected, which is conducive to taking the outer ring saw piece outward on the endoscope sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0015] Figure 2 It is a cross-sectional view of the overall internal structure of the first embodiment of the utility model.

[0016] Figure 3 The utility model Figure 2 A magnified view of the local structure at A.

[0017] Figure 4 It is a schematic diagram of the overall disassembly of the first embodiment of the utility model.

[0018] Figure 5 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0019] 101-rod, 102-outer ring saw, 103-endoscopic sleeve, 104-connecting column, 105-reset spring, 106-extrusion block, 107-limiting arc block, 108-holding spring, 109-guide arc block, 110-movable block, 111-movable groove, 112-fixing hole, 113-groove, 201-protective bag, 202-rubber jacket, 203-positioning arc block, 204-extrusion sponge. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] First embodiment

[0022] See also Figure 1 to Figure 4 ,in Figure 1 is a schematic diagram of the overall structure of the first embodiment, Figure 2 is a cross-sectional view of the overall internal structure of the first embodiment, Figure 3 yes Figure 2 A magnified view of the local structure at A. Figure 4 It is a schematic diagram of the overall disassembly of the first embodiment.

[0023] The utility model provides a guide ring saw assembly for spinal endoscopic surgery: comprising a mandrel 101, an outer ring saw piece 102, an endoscope sleeve 103 and a connecting assembly, wherein the connecting assembly comprises a connecting column 104, a reset spring 105, an extrusion block 106, a limit arc block 107, a holding spring 108, a guide arc block 109 and a movable block 110. The above-mentioned solution solves the problem that the guide head on the mandrel is easy to loosen when connected to the endoscope sleeve, which affects the external ring saw piece to be taken out of the endoscope sleeve.

[0024] With respect to this specific embodiment, the outer ring saw piece 102 is movably connected to the endoscope sleeve 103 and is sleeved on the outside of the endoscope sleeve 103. The push rod 101 is connected to the endoscope sleeve 103. The push rod 101, the outer ring saw piece 102 and the endoscope sleeve 103 are already existing technologies and will not be described in detail here.

[0025] The connecting column 104 is fixedly connected to the push rod 101, and the connecting column 104 is also adapted to the endoscope sleeve 103. The endoscope sleeve 103 has a movable groove 111 and a fixing hole 112. The connecting column 104 has a groove 113. The extrusion block 106 is fixedly connected to the push rod 101 and is located on the push rod 101. The extrusion block 106 is adapted to the movable groove 111. The reset spring 105 is fixedly connected to the endoscope sleeve 103 and is located in the movable groove 111. The limit arc block 1 07 is movably connected to the connecting column 104, and is respectively adapted to the groove 113 and the fixing hole 112. The two ends of the resisting spring 108 are respectively fixedly connected to the connecting column 104 and the limiting arc block 107, and are located in the groove 113. When the push rod 101 is connected to the endoscope sleeve 103, the connecting column 104 on the push rod 101 is inserted into the endoscope sleeve 103, and the extrusion block 106 on the push rod 101 enters the movable groove 111 of the endoscope sleeve 103. The return spring 105 is squeezed inside, and the limiting arc block 107 is squeezed by the endoscope sleeve 103 into the groove 113 to squeeze the holding spring 108. When the push rod 101 is fitted with the endoscope sleeve 103, the force of the holding spring 108 pushes the limiting arc block 107 into the fixing hole 112 of the endoscope sleeve 103, thereby completing the connection and fixing of the push rod 101 and the endoscope sleeve 103, and then the outer ring saw 102 is pulled out from the endoscope sleeve 103 When the push rod 101 and the endoscope sleeve 103 are to be disassembled, the limiting arc block 107 is pressed so that the limiting arc block 107 enters the groove 113 of the connecting column 104. At this time, the push rod 101 is separated from the endoscope sleeve 103 by pushing the extrusion block 106 outward through the action of the reset spring 105. In this way, the push rod 101 and the endoscope sleeve 103 are firmly connected, which is conducive to taking the outer ring saw 102 outward on the endoscope sleeve 103.

[0026] Secondly, the guide arc block 109 is fixedly connected to the connecting column 104 and is located at one end of the connecting column 104 away from the push rod 101. By arranging the guide arc block 109 on the connecting column 104, the guide arc block 109 has an arc surface, and the connecting column 104 can easily enter the endoscope sleeve 103 through the guide arc block 109.

[0027] At the same time, the movable block 110 is movably connected to the endoscope sleeve 103 and is located in the movable groove 111. The movable block 110 is also fixedly connected to the return spring 105. By arranging the movable block 110 in the movable groove 111, when the movable block 110 moves in the movable groove 111, the return spring 105 will expand and contract accordingly.

[0028] When the push rod 101 is connected to the endoscope sleeve 103, the connecting column 104 on the push rod 101 is inserted into the endoscope sleeve 103. Since the guide arc block 109 on the connecting column 104 has an arc surface, it is convenient for the connecting column 104 to enter the endoscope sleeve 103. At the same time, the extrusion block 106 on the push rod 101 will enter the movable groove 111 of the endoscope sleeve 103 to squeeze the reset spring 105. In addition, the limiting arc block 107 will be squeezed by the endoscope sleeve 103 and enter the groove 113 to squeeze the holding spring 108. When the push rod 101 is fitted with the endoscope sleeve 103, the limiting arc block 107 is pushed into the movable groove 111 by the force of the holding spring 108. The push rod 101 is inserted into the fixing hole 112 of the endoscope sleeve 103, thereby completing the connection and fixing of the push rod 101 and the endoscope sleeve 103, and then the outer ring saw component 102 is pulled outward from the endoscope sleeve 103; when the push rod 101 and the endoscope sleeve 103 are disassembled, the limiting arc block 107 is pressed so that the limiting arc block 107 enters the groove 113 of the connecting column 104. At this time, the push rod 101 is separated from the endoscope sleeve 103 by pushing the extrusion block 106 outward through the action of the reset spring 105. In this way, the push rod 101 and the endoscope sleeve 103 are firmly connected, which is conducive to taking the outer ring saw component 102 outward from the endoscope sleeve 103.

[0029] Second embodiment

[0030] See also Figure 5 ,in Figure 5 It is a schematic diagram of the overall structure of the second embodiment.

[0031] On the basis of the first embodiment, a guide ring saw assembly for spinal endoscopic surgery of the utility model further includes a protection assembly, which includes a protection bag 201, a plurality of rubber jackets 202, a plurality of positioning arc blocks 203 and a plurality of extrusion sponges 204.

[0032] The top rod 101, the outer ring saw piece 102 and the endoscope sleeve 103 are all arranged in the protective component. When no operation is performed, the top rod 101, the outer ring saw piece 102 and the endoscope sleeve 103 can be protected by the protective component to avoid exposure to contamination, which is beneficial for surgical use.

[0033] The plurality of rubber jackets 202 are all fixedly connected to the protective bag 201 and are all located inside the protective bag 201. The push rod 101, the outer ring saw piece 102 and the endoscope sleeve 103 are respectively connected to the corresponding rubber jackets 202. Each positioning arc block 203 is respectively fixedly connected to the corresponding rubber jacket 202 and is respectively located above the rubber jacket 202. When no operation is performed, the push rod 101, the outer ring saw piece 102 and the endoscope sleeve 103 are respectively placed in each rubber jacket 202 in the protective bag 201. Each device enters the corresponding rubber jacket 202 through the positioning arc block 203. The rubber jacket 202 is elastic and can clamp the device so that the device is fixed inside the protective bag 201. Then the protective bag 201 is closed, so that each device is protected to avoid exposure and contamination, which is convenient for use in surgery.

[0034] Each of the squeezed sponges 204 is fixedly connected to the corresponding rubber jacket 202 and is located on the inner wall of the rubber jacket 202. By arranging the squeezed sponge 204 on the rubber jacket 202, the squeezed sponge 204 can increase the sealing of the contact between the rubber jacket 202 and each device, and can fix the device in the protective bag 201 more stably and prevent it from moving.

[0035] When the operation is not performed, the push rod 101, the outer ring saw 102 and the endoscope sleeve 103 are placed in the rubber jackets 202 in the protective bag 201 respectively, and each device enters the corresponding rubber jacket 202 through the positioning arc block 203. The rubber jacket 202 is elastic and can clamp the device so that the device is fixed in the protective bag 201. Then the protective bag 201 is closed to protect each device and avoid exposure to contamination, which is convenient for use in surgery. By arranging the squeezing sponge 204 in the rubber jacket 202, the device can be fixed more stably in the protective bag 201 and is not easy to move.

[0036] The above disclosures are only two preferred embodiments of the present invention, which certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A guide ring saw assembly for spinal endoscopic surgery, comprising a mandrel, an outer ring saw piece and an endoscope sleeve, wherein the outer ring saw piece is movably connected to the endoscope sleeve and sleeved on the outside of the endoscope sleeve, and the mandrel is connected to the endoscope sleeve, characterized in that: It also includes a connecting component, which includes a connecting column, a reset spring, an extrusion block, a limit arc block and a supporting spring. The connecting column is fixedly connected to the push rod, and the connecting column is also adapted to the endoscope sleeve. The endoscope sleeve has a movable groove and a fixed hole. The connecting column has a groove. The extrusion block is fixedly connected to the push rod and is located on the push rod, and the extrusion block is adapted to the movable groove. The reset spring is fixedly connected to the endoscope sleeve and is located in the movable groove. The limit arc block is movably connected to the connecting column and is respectively adapted to the groove and the fixing hole. The two ends of the supporting spring are respectively fixedly connected to the connecting column and the limit arc block, and are located in the groove.

2. The guide ring saw assembly for spinal endoscopic surgery according to claim 1, characterized in that: The connecting assembly also includes a guide arc block, which is fixedly connected to the connecting column and is located at an end of the connecting column away from the push rod.

3. The guide ring saw assembly for spinal endoscopic surgery according to claim 2, characterized in that: The connecting assembly also includes a movable block, which is movably connected to the endoscope sleeve and is located in the movable groove. The movable block is also fixedly connected to the reset spring.

4. The guide ring saw assembly for spinal endoscopic surgery according to claim 1, characterized in that: The guide ring saw assembly for spinal endoscopic surgery also includes a protection assembly, and the top rod, the outer ring saw component and the endoscope sleeve are all arranged in the protection assembly.

5. The guide ring saw assembly for spinal endoscopic surgery according to claim 4, characterized in that: The protection component includes a protection bag, multiple rubber jackets and multiple positioning arc blocks. The multiple rubber jackets are fixedly connected to the protection bag and are located inside the protection bag. The push rod, the outer ring saw and the endoscope sleeve are respectively connected to the corresponding rubber jackets. Each positioning arc block is fixedly connected to the corresponding rubber jacket and is respectively located above the rubber jacket.

6. The guide ring saw assembly for spinal endoscopic surgery according to claim 5, characterized in that: The protection component also includes a plurality of extruded sponges, each of which is fixedly connected to the corresponding rubber jacket and is located on the inner side wall of the rubber jacket.

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