Puncture needle clamping device with navigation function

Abstract

A puncture needle clamping device with a navigation function is provided with a navigation body, a pair of clamping arms, a pull rod assembly used for controlling the clamping arms to be opened and closed and a clamping block pair used for fixing a puncture needle, the pair of clamping arms is in shaft connection with the navigation body, one end of the pull rod assembly penetrates through the navigation body and is in transmission connection with the clamping arms, and the other end of the pull rod assembly is in transmission connection with the clamping block pair. And in the same clamping block pair, one clamping block is detachably assembled with one clamping arm. According to the puncture needle clamping device, the puncture needle is fixed through the pair of clamping blocks matched with the puncture needle, then the clamping blocks are fixed through the clamping arms, the clamping force of the puncture needle clamping device is evenly dispersed on the surface of the puncture needle through the clamping blocks, and therefore the clamping force is stable, and the puncture needle cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a puncture needle clamping device with a navigation function. Background Art

[0002] Spinal puncture is a common and important medical examination and treatment method. Because there are a large number of nerves in the spine, a positioning setting is used during the spinal puncture to position the puncture needle in real time. The current positioning methods mainly include magnetic positioning or optical positioning. The puncture needle is clamped by a clamp with a marker. For example, a magnetic navigation puncture needle clamping device disclosed in Chinese patent announcement number CN212729922U includes a clamp fixed end, a clamp movable end, and a magnetic sensor; a clamping groove is provided between the clamp fixed end and the clamp movable end, the puncture needle is fixed in the clamping groove, and the magnetic sensor is placed on the clamp fixed end. The clamping device directly clamps the puncture needle through the clamping groove between the clamp fixed end and the clamp movable end, which is likely to cause unstable clamping or excessive clamping force, and the clamping force of this clamping method is unevenly distributed on the surface of the puncture needle, which is easy to damage the puncture needle.

[0003] Therefore, in view of the shortcomings of the prior art, it is necessary to provide a puncture needle clamping device with a navigation function to solve the shortcomings of the prior art. Utility Model Content

[0004] The purpose of the utility model is to avoid the shortcomings of the prior art and provide a puncture needle clamping device with a navigation function. The clamping force of the puncture needle clamping device with a navigation function is evenly distributed on the surface of the puncture needle, and the clamping force is stable and will not damage the puncture needle.

[0005] The above-mentioned purpose of the utility model is achieved through the following technical measures:

[0006] Provided is a puncture needle clamping device with a navigation function, comprising a navigation body, a pair of clamp arms, a pull rod assembly for controlling the opening and closing of the clamp arms, and a pair of clamp blocks for fixing the puncture needle, wherein the pair of clamp arms are respectively axially connected to the navigation body, one end of the pull rod assembly passes through the navigation body and is transmission-connected to the clamp arms, and in the same pair of clamp blocks, one clamp block and one clamp arm can be detachably assembled.

[0007] Preferably, the above-mentioned clamping block pairs are provided in a plurality of pairs, and the two clamping blocks in each pair of the clamping block pairs are provided with clamping grooves for matching with the puncture needle, and the sizes of the clamping grooves in the plurality of pairs of the clamping block pairs are not all the same.

[0008] When in use, the clamping block pair corresponding to the current puncture needle is defined as the current clamping block pair, and the current clamping block pair is detachably assembled with the corresponding clamping block.

[0009] Preferably, the clamp arm is provided with a clamp body, an arm body and a connecting block, the arm body and the connecting block are respectively and integrally connected to the clamp body, the clamp body is axially connected to the navigation body, the arm body and the clamp block are detachably embedded, and the connecting block is transmission-connected to the pull rod assembly.

[0010] The puncture needle clamping device with navigation function of the utility model is also provided with a clamping mechanism for fixing the clamping block, one end of the clamping mechanism is detachably assembled on the clamping arm, and the other end of the clamping mechanism is clamped with the clamping block.

[0011] Preferably, the clamping mechanism is provided with a ball, a second spring and a stud, and one end of the second spring abuts against the ball.

[0012] Preferably, the above-mentioned pull rod assembly is provided with a first pull rod, a pull ring, a second pull rod, a nut member and a first spring, the first pull rod is respectively axially connected to a pair of the connecting blocks, the pull ring is sleeved on the outer circumference of the first pull rod, one end of the second pull rod passes through the navigation body and is integrally connected with the pull ring, the other end of the second pull rod is threadedly connected to the nut member, the first spring is sleeved on the outer surface of the second pull rod, and one end face of the first spring abuts against the navigation body, and the other end face of the first spring abuts against the pull ring.

[0013] The nut member, the pull ring and the first spring are respectively located on two sides of the navigation body.

[0014] Preferably, the clamp block is provided with a lower sub-block and an upper sub-block, the upper sub-block is integrally connected to the lower sub-block, the upper sub-block is detachably embedded in the clamp arm from top to bottom, and the lower sub-block abuts against the clamp arm.

[0015] Preferably, the side wall of the lower sub-block and the side wall of the upper sub-block are both provided with a groove matching the contour of the puncture needle.

[0016] In the same clamping block pair, the grooves of the two clamping blocks constitute the clamping groove.

[0017] Preferably, the lower sub-block is provided with a receiving hole, and the ball of the clamping mechanism is embedded in the receiving hole.

[0018] Preferably, the navigation body is provided with an assembly plate, two connecting plates, a rotating shaft and a plurality of positioning bodies for navigation, the two connecting plates are integrally connected to the assembly plate, the two ends of the rotating shaft are respectively assembled with the two connecting plates, and the positioning bodies are assembled on the assembly plate.

[0019] Preferably, the positioning body is a reflective ball or a magnetic sensor.

[0020] The utility model is a puncture needle clamping device with a navigation function, which is provided with a navigation body, a pair of clamp arms, a pull rod assembly for controlling the opening and closing of the clamp arms, and a pair of clamp blocks for fixing the puncture needle. The pair of clamp arms are respectively axially connected to the navigation body, one end of the pull rod assembly passes through the navigation body and is transmission-connected to the clamp arms. In the same pair of clamp blocks, one clamp block and one clamp arm can be detachably assembled. The utility model fixes the puncture needle by a pair of clamp blocks matching the puncture needle, and then the clamp arms fix the clamp blocks. The clamping force of the puncture needle clamping device is evenly dispersed on the surface of the puncture needle through the clamp blocks, so that the clamping force is stable and will not damage the puncture needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0022] Figure 1 It is a structural schematic diagram of the puncture needle clamping device.

[0023] Figure 2 for Figure 1 Schematic diagram from another angle.

[0024] Figure 3 for Figure 2 Section intention in the "AA" direction.

[0025] Figure 4 for Figure 3 Schematic diagram of the middle clamp arm after opening.

[0026] Figure 5 It is a schematic diagram of the structure of the pull rod assembly and the clamp arm.

[0027] Figure 6 It is a structural schematic diagram of the navigation body and the pull rod assembly.

[0028] Figure 7 It is a structural schematic diagram of the clamping arm and the clamping mechanism.

[0029] Figure 8 It is a structural schematic diagram of the card installation mechanism.

[0030] Fig. 9 It is a schematic diagram of the structure of the clamping block pair.

[0031] Fig.10 It is a schematic diagram of the structure of the clamping block.

[0032] Fig.11 Schematic cross-section of the puncture needle clamping device of Example 2.

[0033] exist Figures 1 to 11 Including:

[0034] Navigation body 100, assembly plate 110, connecting plate 120, rotating shaft 130, positioning body 140,

[0035] Clamp arm 200, clamp body 210, arm body 220, connecting block 230,

[0036] The pull rod assembly 300, the first pull rod 310, the pull ring 320, the second pull rod 330, the nut 340, the first spring 350,

[0037] The clamping block 400, the lower sub-block 410, the upper sub-block 420, the groove 430, the receiving hole 440, the clamping mechanism 500, the ball 510, the second spring 520, the stud 530,

[0038] Puncture needle 600. DETAILED DESCRIPTION

[0039] The technical solution of the utility model is further described in conjunction with the following embodiments.

[0040] Example 1

[0041] A puncture needle clamping device with navigation function, such as Figure 1 to Figure 2 As shown, a navigation body 100, a pair of clamp arms 200, a pull rod assembly 300 for controlling the opening and closing of the clamp arms 200, and a pair of clamp blocks for fixing the puncture needle 600 are provided. The pair of clamp arms 200 are axially connected to the navigation body 100 respectively, one end of the pull rod assembly 300 passes through the navigation body 100 and is transmission-connected to the clamp arms 200, and a clamp block 400 is detachably assembled with a clamp arm 200.

[0042] It should be noted that the clamp arm 200, under the action of the pull rod assembly 300, reciprocates around the rotation axis of the navigation body 100 to open or close. The utility model directly acts on the clamp block pair through the clamp arm 200, and then clamps the puncture needle 600 through the clamp block 400. This disperses the action on the surface of the puncture needle 600 through the clamp block pair, avoiding stress concentration and damage to the puncture needle 600.

[0043] The rod assembly 300 is provided with a first rod 310, a pull ring 320, a second rod 330, a nut member 340 and a nut member 340. The first rod 310 is axially connected to a pair of connecting blocks 230 respectively. The pull ring 320 is sleeved on the outer periphery of the first rod 310. One end of the second rod 330 passes through the navigation body 100 and is integrally connected with the pull ring 320. The other end of the second rod 330 is threadedly connected with the nut member 340. The nut member 340 is sleeved on the outer surface of the second rod 330, and one end face of the nut member 340 abuts against the navigation body 100, and the other end face of the nut member 340 abuts against the pull ring 320. The nut member 340, the pull ring 320 and the nut member 340 are respectively located on both sides of the navigation body 100, as shown in FIG. Figure 5 and Figure 6 .

[0044] It should be noted that when the nut 340 and the second rod 330 are tightened, the second rod 330 is mostly located inside the nut 340, the pull ring 320 is pulled toward the nut 340, and the pull ring 320 closes the clamp arm 200 through the first rod 310. Figure 3 When the nut member 340 and the second rod 330 are loosened, part of the second rod 330 extends out of the nut member 340. Under the action of the nut member 340, the second rod 330 pushes the pull ring 320 to the other side, thereby opening the clamp arm 200. Figure 4 .

[0045] The clamp arm 200 is provided with a clamp body 210, an arm body 220 and a connecting block 230. The arm body 220 and the connecting block 230 are respectively connected to the clamp body 210 in an integral manner. The clamp body 210 is axially connected to the navigation body 100. The arm body 220 and the clamp block 400 are detachably embedded. The connecting block 230 is transmission-connected to the pull rod assembly 300. Figure 6 and Figure 7 shown.

[0046] The puncture needle clamping device with navigation function of the utility model is also provided with a clamping mechanism 500 for fixing the clamping block 400. One end of the clamping mechanism 500 is detachably mounted on the clamping arm 200, and the other end of the clamping mechanism 500 is clamped with the clamping block 400. The clamping mechanism 500 is provided with a ball 510, a second spring 520 and a stud 530. One end of the second spring 520 is in contact with the ball 510. Figure 8 .

[0047] It should be noted that the direction of the puncture needle 600 of the puncture needle 600 clamping device is defined as downward.

[0048] The clamp block 400 is provided with a lower sub-block 410 and an upper sub-block 420, the upper sub-block 420 is integrally connected with the lower sub-block 410, the upper sub-block 420 is detachably embedded in the clamp arm 200 from top to bottom, and the lower sub-block 410 abuts against the clamp arm 200. The side walls of the lower sub-block 410 and the side walls of the upper sub-block 420 are both provided with grooves 430 matching the contour of the puncture needle 600; in the same clamp block pair, the grooves 430 of the two clamp blocks 400 form a clamping groove; the lower sub-block 410 is provided with a receiving hole 440, and the ball 510 is installed in the receiving hole 440, such as Fig. 9 and Fig.10 .

[0049] It should be noted that the function of the clamping mechanism 500 of the utility model is that after the clamping block 400 is installed, the ball 510 of the clamping mechanism 500 is embedded in the receiving hole 440 of the clamping block 400 to lock it, thereby preventing the clamping block 400 from being dislocated; when the clamping block 400 needs to be removed, it is only necessary to rotate the stud 530 in the opposite direction, and when the clamping block 400 is pulled out, the ball 510 moves in the direction of the stud 530, and the clamping block 400 can be taken out.

[0050] The navigation body 100 is provided with an assembly plate 110, two connecting plates 120, a rotating shaft 130 and a plurality of positioning bodies 140 for navigation. The two connecting plates 120 are integrally connected with the assembly plate 110, the two ends of the rotating shaft 130 are respectively assembled with the two connecting plates 120, and the positioning bodies 140 are assembled on the assembly plate 110. The positioning bodies 140 are reflective balls or magnetic sensors. For optical navigation equipment, the positioning bodies 140 are reflective balls; for magnetic navigation equipment, the positioning bodies 140 are magnetic sensors.

[0051] It should also be noted that in clinical practice, the upper end of the puncture needle 600 needs to be connected or provided with a larger device. If it is not convenient to pull the puncture needle 600 out from the upper end of the clamp arm 200, the utility model can open the clamp arm 200 through the pull rod assembly 300, so that the puncture needle 600 can be removed from the side of the clamp arm 200 without interfering with the device at the upper end of the puncture needle 600.

[0052] The method of using the puncture needle 600 clamping device is as follows: first, the two clamping blocks 400 of a clamping block pair are respectively assembled in the two clamping arms 200, and then the stud 530 of the clamping mechanism 500 is tightened, and the ball 510 is correspondingly and tightly inserted into the accommodating hole 440 of the clamping block 400, and then the corresponding puncture needle 600 is placed into the groove 430 from the outer side of the clamping arm 200, and then the nut member 340 of the pull rod assembly 300 is tightened to close the clamping arm 200, and the puncture needle 600 is finally fixed under the joint clamping action of the two clamping blocks 400; when the puncture needle 600 needs to be removed, it is only necessary to loosen the nut member 340, and then open the clamping arm 200, and then remove the puncture needle 600 from the side of the clamping arm 200.

[0053] The puncture needle 600 clamping device fixes the puncture needle 600 through a pair of clamping blocks matching the puncture needle 600, and then the clamping arm 200 fixes the clamping block 400. The clamping force of the puncture needle 600 clamping device is evenly dispersed on the surface of the puncture needle 600 through the clamping block 400, so that the clamping force is stable and will not damage the puncture needle 600.

[0054] Example 2

[0055] A puncture needle clamping device with navigation function, such as Fig.11, other features are the same as those of Example 1, and also have the following technical features: multiple pairs of clamping blocks are provided.

[0056] The two clamping blocks 400 in each pair of clamping blocks are provided with clamping grooves for matching with the puncture needle 600, and the sizes of the clamping grooves in the multiple pairs of clamping blocks are not all the same.

[0057] When in use, the clamping block pair corresponding to the current puncture needle 600 is defined as the current clamping block pair, and the current clamping block pair is detachably assembled with the corresponding clamping block.

[0058] Compared with Example 1, the puncture needle 600 clamping device of this embodiment is provided with a clamping block 400 suitable for puncture needles 600 of different diameters. When a different puncture needle 600 is needed, the corresponding puncture needle 600 can be fixed by simply assembling the corresponding clamping block 400 into the clamping arm 200, thereby ensuring the fixing stability of puncture needles 600 of different diameters.

[0059] Example 3

[0060] A puncture needle 600 clamping device as in Example 1 or 2, wherein the puncture needle 600 clamping device is suitable for a puncture needle 600 clamping device used in radiofrequency ablation navigation surgery for intervertebral disc herniation.

[0061] It should be noted that in clinical practice, the upper end of the puncture needle 600 of the radiofrequency ablation navigation surgery for intervertebral disc herniation is connected or provided with a large device. If it is inconvenient to extract the puncture needle 600 from the upper end of the clamp arm 200, the puncture needle 600 clamping device of the utility model can open the clamp arm 200 through the pull rod assembly 300, so as to remove the puncture needle 600 from the side of the clamp arm 200 without interfering with the device at the upper end of the puncture needle 600. The intervertebral disc is a thoracic intervertebral disc or a lumbar intervertebral disc.

[0062] The puncture needle clamping device is used as a clamping device for the puncture needle of radiofrequency ablation navigation surgery for intervertebral disc herniation. The clamping device fixes the puncture needle 600 through a pair of clamping blocks matching the puncture needle 600, and then the clamping arm 200 fixes the clamping block 400. The clamping force of the puncture needle 600 clamping device is evenly dispersed on the surface of the puncture needle 600 through the clamping block 400, so that the clamping force is stable and will not damage the puncture needle 600.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A puncture needle clamping device with navigation function, characterized in that: A navigation body, a pair of clamp arms, a pull rod assembly for controlling the opening and closing of the clamp arms, and a pair of clamp blocks for fixing the puncture needle are provided. The pair of clamp arms are respectively axially connected to the navigation body, one end of the pull rod assembly passes through the navigation body and is transmission-connected to the clamp arms, and one clamp block and one clamp arm are detachably assembled.

2. The puncture needle clamping device with navigation function according to claim 1, characterized in that: There are multiple pairs of clamping blocks, and two clamping blocks in each pair of clamping blocks are provided with clamping grooves for matching with the puncture needle, and the sizes of the clamping grooves in the multiple pairs of clamping blocks are not all the same; When in use, the clamping block pair corresponding to the current puncture needle is defined as the current clamping block pair, and the current clamping block pair is detachably assembled with the corresponding clamping block.

3. The puncture needle clamping device with navigation function according to claim 2, characterized in that: The clamp arm is provided with a clamp body, an arm body and a connecting block. The arm body and the connecting block are respectively and integrally connected to the clamp body. The clamp body is axially connected to the navigation body. The arm body and the clamp block are detachably embedded. The connecting block is transmission-connected to the pull rod assembly.

4. The puncture needle clamping device with navigation function according to claim 3, characterized in that: A clamping mechanism for fixing the clamping block is also provided, one end of the clamping mechanism is detachably assembled on the clamping arm, and the other end of the clamping mechanism is clamped with the clamping block.

5. The puncture needle clamping device with navigation function according to claim 4, characterized in that: The clamping mechanism is provided with a ball, a second spring and a stud, and one end of the second spring is in contact with the ball.

6. The puncture needle clamping device with navigation function according to claim 3, characterized in that: The pull rod assembly is provided with a first pull rod, a pull ring, a second pull rod, a nut member and a first spring, the first pull rod is respectively axially connected to a pair of the connection blocks, the pull ring is sleeved on the outer circumference of the first pull rod, one end of the second pull rod passes through the navigation body and is integrally connected to the pull ring, the other end of the second pull rod is threadedly connected to the nut member, the first spring is sleeved on the outer surface of the second pull rod, and one end face of the first spring abuts against the navigation body, and the other end face of the first spring abuts against the pull ring; The nut member, the pull ring and the first spring are respectively located on two sides of the navigation body.

7. The puncture needle clamping device with navigation function according to claim 4, characterized in that: The clamp block is provided with a lower sub-block and an upper sub-block, the upper sub-block is integrally connected with the lower sub-block, the upper sub-block is detachably embedded in the clamp arm from top to bottom, and the lower sub-block abuts against the clamp arm.

8. The puncture needle clamping device with navigation function according to claim 7, characterized in that: The side wall of the lower sub-block and the side wall of the upper sub-block are both provided with a groove matching the contour of the puncture needle; In the same clamping block pair, the grooves of the two clamping blocks constitute the clamping groove; The lower sub-block is provided with a receiving hole, and the ball of the clamping mechanism is embedded in the receiving hole.

9. The puncture needle clamping device with navigation function according to claim 7, characterized in that: The navigation body is provided with an assembly plate, two connecting plates, a rotating shaft and a plurality of positioning bodies for navigation. The two connecting plates are integrally connected to the assembly plate, the two ends of the rotating shaft are respectively assembled with the two connecting plates, and the positioning bodies are assembled on the assembly plate.

10. The puncture needle clamping device with navigation function according to claim 9, characterized in that: The positioning body is a reflective ball or a magnetic sensor.

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