Puncture outfit for spinal surgery in orthopedics department

Abstract

The invention provides a puncture outfit for an orthopedic spinal surgery, and relates to the technical field of surgical instruments, the puncture outfit comprises a puncture needle, and the periphery of the top end part of the puncture needle is rotatably connected with four handles in a surrounding manner; the top end of the puncture needle is slidably sleeved with a sliding ring in a spring pushing mode, and four connecting rods are rotationally connected between the sliding ring and the tail end rod sections of the four handle rods in a surrounding mode. A U-shaped mounting frame is welded to the periphery of the sliding ring. Two strip-shaped sliding grooves are symmetrically formed in the periphery of one handle rod, sliding strips are installed in the two strip-shaped sliding grooves in a sliding mode, semicircular sliding rings are welded to the head ends of the two sliding strips, blocking discs are welded to the tail ends of the two sliding strips, and the semicircular sliding rings are in sliding fit with the handle rods; a short driving shaft is welded to the middle position of the periphery of the semicircular sliding ring, and the short driving shaft abuts against and makes contact with the top end of the vertical rod section of the L-shaped inserting rod. Due to the design that the positioning part and the four handle rods can be vertically contracted, the size of the puncture outfit in an idle state can be effectively reduced, and the puncture outfit can be conveniently transferred and stored.

Description

Technical Field

[0001] The present invention relates to the technical field of surgical instruments, and in particular to a puncture device for orthopedic spinal surgery. Background Art

[0002] In many spinal surgeries, puncture technique is a key link, and a puncture device is needed to puncture the spine.

[0003] In order to extend the lever arm of the knob-driven puncture needle and increase the torque of the knob-driven puncture needle, the existing puncture instruments often set the puncture needle screw-driven rod to a certain length. In order to reduce the support space occupied by these screw-driven rods when idle and reduce the volume of the puncture instrument, most of these screw-driven rods are set to be able to swing and retract. However, the installation position and structural optimization design of the mechanism for positioning the retracted and extended state of the screw-driven rod are not reasonable, resulting in the unlocking and locking operations and the swinging and retracting operations of the screw-driven rod requiring the coordinated driving of both hands. This component not only occupies both hands, but also reduces the efficiency of the above two operations. Summary of the Invention

[0004] In view of this, the present invention provides a puncture instrument for orthopedic spinal surgery to solve the problem that the unlocking and locking operations of the mechanism for positioning the retracted and extended state of the screwing drive rod and the swinging and retracting operation of the screwing drive rod require the coordinated driving and implementation of both hands.

[0005] The technical solution proposed by the present invention is: a puncture device for orthopedic spinal surgery, specifically comprising a puncture needle, the top portion of the puncture needle is rotatably connected to four handles; The top part of the puncture needle is slidably covered with a slip ring in the form of spring pushing, and four connecting rods are rotatably connected between the slip ring and the tail end rod sections of the four handle bars; a U-shaped mounting frame is welded on the outer periphery of the slip ring, and an L-shaped insertion rod is slidingly passed through the peripheral wall of the U-shaped mounting frame and the slip ring in the form of spring pushing; the top part of the puncture needle is provided with two hexagonal positioning holes in the form of upper and lower intervals, and the protruding part of the head end of the horizontal rod section of the L-shaped insertion rod is selectively plugged into the two hexagonal positioning holes; two strip slide grooves are symmetrically provided on the outer periphery of one of the handle bars, and slide bars are slidably installed in the two strip slide grooves, and semi-circular slip rings are welded at the head ends of the two slide bars, and a baffle is welded at the tail end, and the semi-circular slip rings are slidably matched with the handle bar; a short drive shaft is welded at the middle position of the outer periphery of the semi-circular slip ring, and the short drive shaft is in contact with the top part of the vertical rod section of the L-shaped insertion rod.

[0006] Furthermore, the top portion of the puncture needle is welded with a positioning ring and a retaining ring in the form of an upper and lower interval, and the slip ring contacts the positioning ring when sliding upward; The spring for pushing the slip ring is sleeved on the puncture needle and is compressed and clamped between the positioning ring and the slip ring.

[0007] Furthermore, the horizontal rod section of the L-shaped rod is a hexagonal structure, and the horizontal rod section is slidably fitted with the vertical side rods of the U-shaped mounting frame and the peripheral wall of the slip ring, and a stopper is welded on the horizontal rod section; The spring for pushing the L-shaped plug rod is sleeved on the horizontal rod section of the L-shaped plug rod and is compressed and clamped between the vertical side rod and the stopper of the U-shaped installation frame. The stopper is in contact with the outer periphery of the slip ring.

[0008] Furthermore, it also includes a positioning sleeve, the puncture needle is inserted into the positioning sleeve, a U-shaped connecting frame is welded to the outer periphery of the top part of the positioning sleeve, and a positioning component is rotatably installed on the U-shaped connecting frame.

[0009] Furthermore, the positioning component is integrally formed by a U-shaped handle frame and a swivel fixed to the head end of the U-shaped handle frame. The swivel is rotatably matched with the side shaft of the U-shaped connecting frame, and a positioning circular hole is opened through the side shaft.

[0010] Furthermore, an insertion shaft is slidably installed on the U-shaped handle frame and the rotating ring in the form of a spring push. When the positioning component is swung to a horizontal state, the head end of the insertion shaft is plugged into the positioning circular hole, and a pinch block is welded to the tail end of the insertion shaft. The pinch block slides with the U-shaped groove inside the U-shaped handle frame and is completely located in the U-shaped groove.

[0011] Furthermore, a limiting ring is welded inside the U-shaped handle frame, the insertion shaft and the limiting ring are slidingly fitted, a retaining ring is welded on the insertion shaft, and a spring for pushing the insertion shaft is mounted on the insertion shaft and is compressed and clamped between the limiting ring and the retaining ring.

[0012] Furthermore, the outer periphery of the bottom end portion of the positioning sleeve is provided with an external thread, and the inner periphery thereof is provided with an internal thread. The middle section of the puncture needle is provided with an external thread, and the external thread is screwed together with the internal thread of the positioning sleeve.

[0013] The present invention provides a puncture device for orthopedic spinal surgery, which has the following beneficial effects: 1. When the four handles are horizontally unfolded, they can be used as components for twisting and driving the puncture needle. At this time, the length of the four handles in the horizontally unfolded state is the force arm for twisting and driving the puncture needle. Since the four handles have a certain length, the force arm for driving the puncture needle is also extended to a certain extent. Therefore, when the handles in the four unfolded states are twisted and driven to drive the puncture needle, a certain effort-saving effect can be achieved, which can reduce the torque applied by the doctor to the puncture needle to twist and drive the puncture needle, and reduce the difficulty of the doctor's operation of twisting and driving the puncture needle.

[0014] Second, the design of the positioning component and the four handles that can be upright and retracted can effectively reduce the volume of the trocar when it is idle, making it easier to transfer and store it.

[0015] 3. Since the baffle plate and the semicircular slip ring are slidably integrated on the handlebar on which they are installed, when the handlebar is swung down to drive the four handlebars to swing down and retract synchronously, the baffle plate, the semicircular slip ring and the short drive shaft can be pushed away from the puncture needle with a single hand holding the handlebar to complete the release and unlocking of the slip ring. This makes it possible to complete the release and unlocking of the slip ring and the retraction of the four handlebars at one time with a single hand in the present invention. Compared with the existing technology, the tedious steps of performing the above two operations separately with both hands can be eliminated. The operation is convenient and efficient, which helps to improve the operational efficiency of the retraction of the four handlebars. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0017] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0018] In the attached figure: Figure 1 Shows a schematic diagram of the overall structure of the present invention; Figure 2 A schematic diagram of the internal structure of the positioning sleeve in the present invention is shown; Figure 3 The present invention shows Figure 2 A schematic diagram of the enlarged structure of part A; Figure 4 A schematic diagram showing the disassembled state of the puncture needle of the present invention is shown; Figure 5 A schematic diagram of the connection and assembly of the handle and the puncture needle in the present invention is shown; Figure 6 Shows a schematic diagram of the installation position of the slip ring in the present invention; Figure 7 A schematic diagram showing the disassembled state of the handlebar and the L-shaped insertion rod of the present invention is shown; Figure 8 The schematic diagram of the structure of the semicircular slip ring in the present invention is shown; Figure 9 A schematic diagram of the disassembled state of the insertion shaft in the present invention is shown.

[0019] List of reference numerals: 1. Positioning sleeve; 101. U-shaped connecting frame; 1011. Positioning hole; 2. Puncture needle; 201. Retaining ring; 202. Positioning ring; 203. Slip ring; 2031. Connecting rod; 2032. U-shaped mounting frame; 204. Hexagonal positioning hole; 205. L-shaped insert; 2051. Stopper; 3. Positioning components; 301. U-shaped handle frame; 302. swivel; 303. plug-in shaft; 3031. retaining ring; 304. pinch block; 305. limit ring; 4. Handlebar; 401. Strip slide; 402. Semicircular slip ring; 403. Slide bar; 404. Baffle; 4021. Short drive shaft. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Please refer to Figures 1 to 9 , Example 1: This embodiment provides a puncture device for orthopedic spinal surgery, comprising a puncture needle 2, the top portion of which is rotatably connected to four handles 4; The top part of the puncture needle 2 is slidably sleeved with a slip ring 203 in the form of a spring push, and the slip ring 203 is connected to the tail end rod section of the handle 4 by four connecting rods 2031; a U-shaped mounting frame 2032 is welded to the outer periphery of the slip ring 203, and an L-shaped insertion rod 205 is slidably passed through the peripheral wall of the U-shaped mounting frame 2032 and the slip ring 203 in the form of a spring push; the top part of the puncture needle 2 is provided with two hexagonal positioning holes 204 in the form of an upper and lower interval, and the protruding part of the head end of the horizontal rod section of the L-shaped insertion rod 205 It is plugged into and matched with the two hexagonal positioning holes 204 in an optional form; two strip-shaped slide grooves 401 are symmetrically opened on the outer periphery of a handlebar 4, and slide bars 403 are slidably installed in the two strip-shaped slide grooves 401. The head ends of the two slide bars 403 are welded with semi-circular slip rings 402, and the tail ends are welded with baffles 404. The semi-circular slip rings 402 slide in cooperation with the handlebar 4; a short drive shaft 4021 is welded to the middle position of the outer periphery of the semi-circular slip ring 402, and the short drive shaft 4021 is in contact with the top part of the upright rod section of the L-shaped insertion rod 205.

[0022] Preferably, the top part of the puncture needle 2 is welded with a positioning ring 202 and a retaining ring 201 in the form of an upper and lower interval, and the slip ring 203 comes into contact with the positioning ring 202 when sliding upward; the spring that pushes the slip ring 203 is mounted on the puncture needle 2 and is compressed and clamped between the positioning ring 202 and the slip ring 203.

[0023] Preferably, the horizontal rod section of the L-shaped insertion rod 205 has a hexagonal structure, and the horizontal rod section is slidably fitted with the vertical side rods of the U-shaped mounting frame 2032 and the peripheral wall of the slip ring 203, and a stop block 2051 is welded on the horizontal rod section; the spring for pushing the L-shaped insertion rod 205 is mounted on the horizontal rod section of the L-shaped insertion rod 205 and is compressed and clamped between the vertical side rods of the U-shaped mounting frame 2032 and the stop block 2051, and the stop block 2051 is in contact with the outer periphery of the slip ring 203.

[0024] Implementation 2: This implementation is based on implementation 1 and adds the following content compared to implementation 1: This embodiment includes a positioning sleeve 1, and the puncture needle 2 is inserted into the positioning sleeve 1. A U-shaped connecting frame 101 is welded to the outer periphery of the top part of the positioning sleeve 1, and a positioning component 3 is rotatably installed on the U-shaped connecting frame 101; the positioning component 3 is integrally formed by a U-shaped handle frame 301 and a swivel 302 fixedly connected to the head end of the U-shaped handle frame 301, and the swivel 302 is rotatably matched with the side shaft of the U-shaped connecting frame 101, and a positioning circular hole 1011 is opened through the side shaft.

[0025] Preferably, an insert shaft 303 is slidably installed on the U-shaped handle frame 301 and the rotating ring 302 in the form of a spring push, and a pinch block 304 is welded to the tail end of the insert shaft 303. The pinch block 304 slides with the U-shaped groove inside the U-shaped handle frame 301 and is completely located in the U-shaped groove.

[0026] Preferably, a limiting ring 305 is welded inside the U-shaped handle frame 301, the insertion shaft 303 and the limiting ring 305 are slidingly fitted together, a retaining ring 3031 is welded on the insertion shaft 303, and a spring for pushing the insertion shaft 303 is mounted on the insertion shaft 303 and is compressed and clamped between the limiting ring 305 and the retaining ring 3031.

[0027] Preferably, the outer periphery of the bottom end portion of the positioning sleeve 1 is provided with an external thread, and the inner periphery thereof is provided with an internal thread, and the middle section of the puncture needle 2 is provided with an external thread, which is screwed together with the internal thread of the positioning sleeve 1.

[0028] The following is a detailed explanation of the working principles, specific details, implementation steps, functions and interrelationships of the above features, as well as their role in implementing this technical solution: When using the puncture device, first use an external threaded hole opening device to open a threaded hole for fixing the positioning sleeve 1 at the designated surgical position on the spine, then screw the positioning sleeve 1 into the threaded hole through the external thread on the positioning sleeve 1, then fix the puncture needle 2 in the positioning sleeve 1 in the form of threaded screwing, and then continue to screw the puncture needle 2 forward. When being screwed forward, the puncture needle 2 is pushed forward to drive its body to puncture the spine. When the puncture needle 2 punctures to a predetermined depth, the puncture needle 2 is rotated to loosen and extracted from the positioning sleeve 1. Finally, the external surgical instrument is inserted into the axial hole inside the positioning sleeve 1 vacated by the puncture needle 2, and the corresponding surgical treatment is performed on the puncture site on the spine.

[0029] The handle bar 4 has two usage states, one is a horizontally expanded usage state, and the other is an upright retracted usage state. When the handle bar 4 is horizontally expanded, it can be used as a component for twisting and driving the puncture needle 2. At this time, the length of the handle bar 4 in the horizontally expanded state is the force arm for twisting and driving the puncture needle 2. Since the handle bar 4 has a certain length, the force arm for driving the puncture needle 2 is also extended to a certain extent. Therefore, when the handle bar 4 in the expanded state is used to twist and drive the puncture needle 2, a certain effort-saving effect can be achieved, which can reduce the torque applied to the puncture needle 2 by the doctor to twist and drive the puncture needle 2, and reduce the difficulty of the doctor's twist-driven puncture needle 2; when the handle bar 4 is in the upright retracted state, it is close to the outer periphery of the puncture needle 2, which can reduce its occupation of the support space.

[0030] The positioning component 3 has two usage forms. It is in a horizontally expanded state when in use and in an upright retracted state when idle. When the positioning component 3 is in the horizontally expanded state, the static holding force applied to it by hand can limit the positioning component 3 from twisting along with the puncture needle 2, ensuring that the knob puncture and rotary loosening functions of the puncture needle 2 are implemented normally and effectively. When the positioning component 3 is in the upright retracted state, it is abutted against the outer periphery of the positioning sleeve 1, which can reduce its occupation of the supporting space. The design of the positioning component 3 and the four handles 4 that can be upright and retracted can effectively reduce the volume of the puncture device in the idle state, making it easier to transfer and store it.

[0031] When the four handles 4 and the positioning component 3 are all installed in a rotating manner, they all realize the switching of the retracted and extended use states through the up and down swinging action; when the positioning component 3 is swung upward to the horizontal expansion state, the head end of the plug shaft 303 is aligned with the positioning circular hole 1011 and is plugged into the positioning circular hole 1011 under the push of the spring on the plug shaft 303. At this time, the plug shaft 303 can plug and position the positioning component 3 in the horizontal expansion use state; the four connecting rods 2031, the four handles 4, and the slip ring 203 are connected together to form a set of four crank slider machine The four-crank slider mechanism can drive the four handle bars 4 to swing upward to the horizontal expansion state by sliding the slip ring 203 upward. In this process, the L-shaped rod 205 moves up synchronously with the slip ring 203. When the horizontal rod section of the L-shaped rod 205 slides up and aligns with the upper hexagonal positioning hole 204, the protruding part of the head end of the horizontal rod section is pushed by the spring on the horizontal rod section to engage with the hexagonal positioning hole 204. At this time, the L-shaped rod 205 can insert the slip ring 203 and position it in the upward sliding high position, and keep the four handle bars 4 in the horizontal expansion state. The open state of use; through the four-crank slider mechanism, the handle 4 with the semicircular slip ring 402 is swung downward, which can drive the slip ring 203 to slide downward and control the four handles 4 to swing down synchronously. In this process, the L-shaped rod 205 moves downward synchronously with the slip ring 203. When the horizontal rod segment of the L-shaped rod 205 slides down and aligns with the hexagonal positioning hole 204 on the lower side, the protruding part of the head end of the horizontal rod segment is pushed by the spring on the horizontal rod segment to engage with the hexagonal positioning hole 204. At this time, the L-shaped rod 205 can plug the slip ring 203 The sliding ring 203 is positioned in the lowered state and keeps the handle bar 4 in the upright and retracted state of use; the slip ring 203 compresses the spring on the puncture needle 2 when sliding down. When the slip ring 203 is positioned in the lowered state and the handle bar 4 is in the upright and retracted state, the L-shaped insertion rod 205 is pulled out from the lower hexagonal positioning hole 204, the slip ring 203 can be loosened and unlocked, and the downward holding force of the slip ring 203 on the above spring is released. At this time, the spring can push back to drive the slip ring 203 to slide upward, controlling the handle bar 4 to automatically swing to the horizontally expanded state.

[0032] It is worth noting that, whether the handlebars 4 are being swung upward to expand or swung downward to retract, the L-shaped rod 205 needs to be pulled out from the hexagonal positioning hole 204 at the corresponding height to release the unlocking slip ring 203 .

[0033] The baffle 404 is fixedly connected to the semicircular slip ring 402 through two slide bars 403. When the handle 4 is in the horizontally expanded state, the power transmission between the short drive shaft 4021 and the top part of the upright rod section of the L-shaped insertion rod 205 is used to push the baffle 404 and the semicircular slip ring 402 in the direction away from the puncture needle 2, which can push and drive the L-shaped insertion rod 205 to slide in the same direction and control the L-shaped insertion rod 205 to be pulled away from the upper hexagonal positioning hole 204, thereby completing the loosening and unlocking of the slip ring 203. Since the baffle 404 and the semicircular slip ring 402 are slidably integrated on the handle 4 on which it is installed, the baffle 404 and the semicircular slip ring 402 can be loosened and unlocked by the handle 4 through the handle. When the rod 4 swings down and drives the four handlebars 4 to swing down and retract synchronously, the single hand holding the handlebar 4 can push the plug plate 404, the semicircular slip ring 402 and the short drive shaft 4021 to slide away from the puncture needle 2 to complete the loosening and unlocking of the slip ring 203. This makes it possible to complete the loosening and unlocking of the slip ring 203 and the swing-down retraction of the four handlebars 4 at one time with only one hand in the present invention. Compared with the existing technology, the tedious steps of requiring both hands to coordinate and perform the above two operations separately can be eliminated. The operation is convenient and efficient, which helps to improve the operational efficiency of the swing-down retraction of the four handlebars 4.

[0034] When the positioning component 3 in the horizontally expanded state is subjected to downward contraction, the head end of the insertion shaft 303 must be pulled out from the positioning circular hole 1011 first to unlock and release the positioning component 3; the thumb of the hand holding the positioning component 3 is pressed on the pinching block 304, and the pinching block 304 and the insertion shaft 303 are driven to slide away from the puncture needle 2, so that the insertion shaft 303 can be pulled out from the positioning circular hole 1011.

[0035] In this article, there are several points to note: 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0036] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0037] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A puncture device for orthopedic spinal surgery, comprising a puncture needle (2), wherein the top portion of the puncture needle (2) is rotatably connected to four handles (4); It is characterized in that The top portion of the puncture needle (2) is provided with a slip ring (203) which is slidably mounted in the form of a spring push, and four connecting rods (2031) are connected to the slip ring (203) and the tail end rod sections of the four handle bars (4) in a rotatable manner; a U-shaped mounting frame (2032) is welded to the outer periphery of the slip ring (203), and an L-shaped insertion rod (205) is inserted and slidably penetrated through the peripheral wall of the U-shaped mounting frame (2032) and the slip ring (203) in the form of a spring push; the top portion of the puncture needle (2) is provided with two hexagonal positioning holes (204) in the form of an upper and lower spacing, and the protruding portion of the head end of the horizontal rod section of the L-shaped insertion rod (205) is provided. The handle (4) is plugged into two hexagonal positioning holes (204) in an optional manner; two strip-shaped slide grooves (401) are symmetrically opened on the outer periphery of the handle (4), and a slide bar (403) is slidably installed in the two strip-shaped slide grooves (401); the head ends of the two slide bars (403) are welded with a semicircular slip ring (402), and the tail ends are welded with a baffle (404), and the semicircular slip ring (402) is slidably matched with the handle (4); a short drive shaft (4021) is welded at the middle position of the outer periphery of the semicircular slip ring (402), and the short drive shaft (4021) is in contact with the top end portion of the vertical rod section of the L-shaped plug rod (205).

2. The puncture device for orthopedic spinal surgery according to claim 1, characterized in that: The top portion of the puncture needle (2) is welded with a positioning ring (202) and a retaining ring (201) in an upper and lower spaced manner, and the slip ring (203) abuts against the positioning ring (202) when sliding upward; The spring for pushing the slip ring (203) is sleeved on the puncture needle (2) and is compressed and clamped between the positioning ring (202) and the slip ring (203).

3. The puncture device for orthopedic spinal surgery according to claim 1, characterized in that: The horizontal rod section of the L-shaped insertion rod (205) has a hexagonal structure, and the horizontal rod section is in sliding engagement with the vertical side rods of the U-shaped installation frame (2032) and the peripheral wall of the slip ring (203), and a stopper (2051) is welded onto the horizontal rod section; The spring for pushing the L-shaped insertion rod (205) is sleeved on the horizontal rod section of the L-shaped insertion rod (205) and is compressed and clamped between the vertical side rod of the U-shaped installation frame (2032) and the stopper (2051), and the stopper (2051) is in contact with the outer periphery of the slip ring (203).

4. The puncture device for orthopedic spinal surgery according to claim 1, characterized in that: It also includes a positioning sleeve (1), wherein the puncture needle (2) is inserted through the positioning sleeve (1), a U-shaped connecting frame (101) is welded to the outer periphery of the top portion of the positioning sleeve (1), and a positioning component (3) is rotatably mounted on the U-shaped connecting frame (101).

5. The puncture device for orthopedic spinal surgery according to claim 4, characterized in that: The positioning component (3) is formed integrally from a U-shaped handle frame (301) and a rotating ring (302) fixed to the head end of the U-shaped handle frame (301). The rotating ring (302) is rotatably engaged with a side shaft of the U-shaped connecting frame (101), and a positioning circular hole (1011) is formed through the side shaft.

6. The puncture device for orthopedic spinal surgery according to claim 5, characterized in that: The U-shaped handle frame (301) and the rotating ring (302) are both slidably mounted with an insert shaft (303) in the form of a spring push. When the positioning component (3) is swung to a horizontal state, the head end of the insert shaft (303) is inserted and engaged with the positioning circular hole (1011). A pinch block (304) is welded to the tail end of the insert shaft (303). The pinch block (304) is slidably engaged with the U-shaped groove inside the U-shaped handle frame (301) and is completely located in the U-shaped groove.

7. The puncture device for orthopedic spinal surgery according to claim 5, characterized in that: A limiting ring (305) is welded inside the U-shaped handle frame (301), the insertion shaft (303) and the limiting ring (305) are slidably fitted through the insertion shaft (303), a retaining ring (3031) is welded onto the insertion shaft (303), and a spring for pushing the insertion shaft (303) is sleeved on the insertion shaft (303) and is compressed and clamped between the limiting ring (305) and the retaining ring (3031).

8. The puncture device for orthopedic spinal surgery according to claim 1, characterized in that: The outer periphery of the bottom end portion of the positioning sleeve (1) is provided with an external thread, and the inner periphery thereof is provided with an internal thread. The middle section of the puncture needle (2) is provided with an external thread, and the external thread is screwed together with the internal thread of the positioning sleeve (1).

Images