Puncture needle orientation die

Abstract

The utility model relates to a puncture needle orientation die which is characterized in that when a puncture needle needs to be orientated, an upper die base is pressed towards a lower die base, and the upper die base presses a positioning assembly into a concave part in the process of pressing the upper die base towards the lower die base; the body of the puncture needle gradually gets close to the first positioning block and makes contact with the first contact face of the first abutting block, so that the body can rotate to the same direction to enter the first limiting channel, and then the sharp part of the puncture needle enters the second limiting channel; due to the fact that the first limiting channel and the second limiting channel are in butt joint to form the clamping channel for orienting the puncture needle, the sharp part and the body can be adjusted to a certain fixed orientation, and therefore the orienting effect on the puncture needle is achieved. And after the puncture needle is orientated, handle injection molding is carried out on one end, far away from the sharp part, of the puncture needle body, so that the holding direction of the handle and the orientation of the sharp part are relatively fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a puncture needle orientation mold. Background Art

[0002] In the medical field, ultrasound images are used to guide the puncture needle to puncture the target site to collect body fluids, tissues, cells or introduce flushing fluids, etc. Among them, the oocyte collector is a medical device used in human assisted reproductive ultrasound imaging-guided egg retrieval. In actual use, the operator places the ultrasound probe on the site to be punctured or on the surface of the site to be punctured, and inserts the needle into the target site from the side of the probe. After that, the tissue structure, needle and needle tip can be seen on the display screen of the ultrasound imaging system, so as to accurately grasp the puncture needle reaching the target position.

[0003] At present, in order to improve the puncture ability of the puncture needle and make the needle sharper and faster to puncture, the needle tip of the puncture needle adopts a bevel design. Since the bevel design of the needle tip makes the end of the needle tip directional, during the egg retrieval operation, the operator often needs to switch the line of sight between the display screen and the puncture needle, and determine the direction of needle insertion by observing the puncture needle on the hand to avoid damage to the cells caused by the end of the needle during the insertion process, but this will make the operator inconvenient to use and easily affect the accuracy and success rate of the egg retrieval operation. Therefore, the prior art sets a pointing portion parallel to the puncture needle on the surface of the handle, and when the puncture needle is connected to the handle, the pointing portion is consistent with the inclination direction of the inclined mouth. During the operation, the operator's thumb is placed on the pointing portion, and the other four fingers are gripped around the handle. At this time, the fingertip direction of the thumb corresponds to the opening direction of the needle end of the puncture needle. The operator only needs to observe the display of the display screen to control the insertion of the puncture needle, and no longer needs to observe the puncture needle on the hand to determine the direction of needle insertion. The operation is more convenient, which is conducive to improving the accuracy and success rate of egg retrieval.

[0004] Since the injection molding angle of the pointing portion of the puncture needle handle is fixed, in order to ensure that the extension direction of the pointing portion is consistent with the tilt direction of the tilt opening, the tilt direction of the needle tip tilt opening of each puncture needle must also be fixed. Currently, when the puncture needle is placed on the injection mold by an ordinary manipulator or manually, it is impossible to ensure that the tilt direction of the needle tip tilt opening remains unchanged. Utility Model Content

[0005] The purpose of the utility model is to provide a puncture needle orientation mold which can orient the puncture needle.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a puncture needle orientation mold, the puncture needle orientation mold has a first direction and a second direction intersecting each other, which are used to orient the puncture needle, the puncture needle comprises: a body and a sharp portion, the puncture needle orientation mold comprises: a first positioning block, a second positioning block, an upper mold base, a lower mold base, a first abutment block, and a positioning component for positioning the puncture needle; the upper mold base and the lower mold base are spaced along the first direction; the first positioning block is arranged on the side surface of the lower mold base opposite to the upper mold base; a recessed portion is provided on the side surface of the lower mold base opposite to the upper mold base, and the positioning component is slidably arranged in the recessed portion along the first direction; the second positioning The positioning block is arranged on the side of the upper die base opposite to the lower die base; the first positioning block has a first limiting channel adapted to the body, the first limiting channel extends along the second direction and passes through the first positioning block; the first abutment block is arranged on the side of the first positioning block facing the upper die base, the first abutment block has a first contact surface for contacting with the body to drive the body to rotate; the second positioning block has a second limiting channel adapted to the sharp portion, the second limiting channel extends along the second direction and passes through an end of the second positioning block facing the first positioning block; the first positioning block and the second positioning block are spaced apart along the second direction;

[0007] Wherein, when the upper mold base and the lower mold base are closed, the first limiting channel and the second limiting channel are connected to each other to form a clamping channel for orienting the puncture needle.

[0008] Optionally, the positioning assembly includes: a first fixed seat and a second fixed seat; the recess includes: a first sub-recessed portion and a second sub-recessed portion; the first sub-recessed portion and the second sub-recessed portion are spaced apart along the second direction, the first fixed seat is slidably disposed on the first sub-recessed portion along the first direction, and the second fixed seat is slidably disposed on the second sub-recessed portion along the first direction; a first positioning channel is provided on a side of the first fixed seat facing the upper mold seat, and the first positioning channel passes through the first fixed seat along the second direction; a second positioning channel is provided on a side of the first fixed seat facing the upper mold seat, and the second positioning channel passes through the second fixed seat along the second direction; the first positioning channel and the second positioning channel are on the same straight line.

[0009] Optionally, it also includes: a first elastic member and a second elastic member; the first fixed seat is slidably disposed in the first sub-recessed portion, one end of the first elastic member abuts against the bottom wall of the first sub-recessed portion, and the other end of the first elastic member abuts against the first fixed seat; the second fixed seat is slidably disposed in the second sub-recessed portion, one end of the second elastic member abuts against the bottom wall of the second sub-recessed portion, and the other end of the second elastic member abuts against the second fixed seat.

[0010] Optionally, both the first elastic member and the second elastic member are springs.

[0011] Optionally, the first positioning channel has a fifth side wall and a sixth side wall opposite to each other; a fifth curved surface is formed between the fifth side wall and the side of the first fixed seat facing the upper mold seat; a sixth curved surface is formed between the sixth side wall and the side of the first fixed seat facing the upper mold seat.

[0012] Optionally, the first limiting channel has a first side wall and a second side wall opposite to each other; a first curved surface is formed between the first side wall and the side of the first positioning block facing the upper mold base; a second curved surface is formed between the second side wall and the side of the first positioning block facing the upper mold base.

[0013] Optionally, the second limiting channel has a third side wall and a fourth side wall opposite to each other; a third curved surface is formed between the third side wall and the side of the second positioning block facing the lower mold base; a fourth curved surface is formed between the fourth side wall and the side of the second positioning block facing the lower mold base.

[0014] Optionally, the second limiting channel has a first end and a second end; the second positioning block is provided with an avoidance hole for avoiding the sharp portion; the first end of the second limiting channel passes through the second positioning block, and the second end of the second limiting channel is connected to the avoidance hole.

[0015] Optionally, it also includes: a plurality of guide rods; a plurality of guide rods are arranged on the lower die base; a plurality of guide holes are opened on the upper die base; and the plurality of guide rods are slidably arranged in the plurality of guide holes in a one-to-one correspondence.

[0016] Optionally, it further includes: a second abutment block; the second abutment block is arranged on the side of the second positioning block facing the lower mold base, and the second abutment block has a second contact surface for contacting the body to drive the body to rotate.

[0017] Compared with the prior art, the puncture needle orientation mold of the embodiment of the utility model has the following beneficial effects:

[0018] When the puncture needle needs to be oriented, the upper mold base and the lower mold base are first adjusted to the open mold state, and then the puncture needle is placed on the positioning assembly for positioning, so that the puncture needle is placed along the second direction, and the puncture needle body enters the first limiting channel to achieve the positioning of the puncture needle. Then, when it is necessary to orient the puncture needle, the upper mold base is pressed against the lower mold base. In the process of pressing the upper mold base against the lower mold base, the upper mold base will press the positioning component into the recessed portion, so that the body of the puncture needle gradually approaches the first positioning block and the body of the puncture needle contacts the first contact surface of the first abutment block, so that the body can be rotated to the same direction to enter the first limiting channel, and then the sharp part of the puncture needle enters the second limiting channel. Since the first limiting channel and the second limiting channel are connected to each other to form a clamping channel for orienting the puncture needle, the sharp part and the body can be adjusted to a fixed direction, thereby realizing the orienting effect on the puncture needle. After the orientation of the puncture needle is completed, the handle is injection molded on the end of the puncture needle body away from the sharp part, so that the holding direction of the handle and the direction of the sharp part are relatively fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model (mold closing state);

[0020] Figure 2 It is a structural schematic diagram of an embodiment of the utility model (mold opening state);

[0021] Figure 3 It is a structural schematic diagram of the lower die base in the embodiment of the utility model;

[0022] Figure 4 yes Figure 3 A is an enlarged schematic diagram;

[0023] Figure 5 yes Figure 3 A magnified schematic diagram of B;

[0024] Figure 6 It is a structural schematic diagram of the upper die base in the embodiment of the utility model;

[0025] Figure 7 yes Figure 6 A magnified schematic diagram of middle C;

[0026] Figure 8 It is a cross-sectional view of an embodiment of the utility model;

[0027] Fig. 9 It is a schematic diagram of the structure of the puncture needle in the embodiment of the utility model.

[0028] In the figure, 1, puncture needle; 11, main body; 12, sharp part; 2, first positioning block; 21, first limiting channel; 211, first curved surface; 212, second curved surface; 3, second positioning block; 31, second limiting channel; 311, third curved surface; 312, fourth curved surface; 32, avoidance hole; 4, upper die seat; 5, lower die seat; 51, first sub-recess; 52, second sub-recess; 6, positioning assembly; 61, first fixed seat; 611, first positioning channel; 6111, fifth curved surface; 6112, sixth curved surface; 62, second fixed seat; 7, first elastic member; 8, second elastic member; 9, guide rod; 10, first abutment block; 13, second abutment block. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0030] First, it should be noted that the top, bottom, upward, downward and other directions mentioned in this article are defined relative to the directions in the respective drawings, and they are relative concepts, and therefore can be changed according to different positions and different practical states. Therefore, these or other directions should not be understood as restrictive terms.

[0031] It should be noted that the term "comprising" does not exclude other elements or steps and "a" or "an" does not exclude a plurality.

[0032] In addition, it should be pointed out that any single technical feature described or implied in the embodiments of this document, or any single technical feature shown or implied in the accompanying drawings, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present application that are not directly mentioned in this document.

[0033] It should also be understood that the terms "first", "second", etc. are used herein to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0034] It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

[0035] like Figure 1-Figure 9 As shown, a puncture needle orientation mold of a preferred embodiment of the utility model embodiment has a first direction and a second direction intersecting each other, which is used to orient the puncture needle 1, see Fig. 9The puncture needle 1 comprises: a body 11 and a sharp portion 12. The body 11 is a cylindrical rod, and the sharp portion 12 is a needle tip with an inclined opening, so that the sharp portion 12 can be inserted into the skin. Orienting the puncture needle 1 means that the inclined opening of the sharp portion 12 of the puncture needle 1 is oriented in the same direction each time it passes through the puncture needle orientation mold.

[0036] See also Figure 2-Figure 7 The puncture needle orientation mold includes: a first positioning block 2, a second positioning block 3, an upper mold base 4, a lower mold base 5, a first abutment block 10, and a positioning assembly 6 for positioning the puncture needle 1. The upper mold base 4 and the lower mold base 5 are spaced apart along the first direction. The first positioning block 2 is arranged on the side of the lower mold base 5 opposite to the upper mold base 4. A recess is provided on the side of the lower mold base 5 opposite to the upper mold base 4, and the positioning assembly 6 is slidably arranged in the recess along the first direction. The second positioning block 3 is arranged on the side of the upper mold base 4 opposite to the lower mold base 5. The first positioning block 2 has a first limiting channel 21 adapted to the body 11, and the first limiting channel 21 extends along the second direction and passes through one end of the first positioning block 2 toward the second positioning block 3, and the first abutment block 10 has a first contact surface for contacting the body 11 to drive the body 11 to rotate. The second positioning block 3 has a second limiting passage 31 adapted to the sharp portion 12, and the second limiting passage 31 extends along the second direction and passes through one end of the second positioning block 3 facing the first positioning block 2. The first positioning block 2 and the second positioning block 3 are spaced apart along the second direction.

[0037] The positioning assembly 6 can support the puncture needle 1 in the mold opening state, so that the puncture needle 1 will not enter the first limiting channel 21 and the second limiting channel 31 in the mold opening state.

[0038] Based on the above structure, when the puncture needle 1 needs to be oriented, the upper mold base 4 and the lower mold base 5 are first adjusted to the open mold state, and then the puncture needle 1 is placed on the positioning component 6 for positioning, so that the puncture needle 1 is placed along the second direction, and the puncture needle 1 body 11 enters the first limiting channel 21 to achieve the positioning of the puncture needle 1. Then, when it is necessary to orient the puncture needle 1, the upper mold base 4 is pressed against the lower mold base 5. In the process of pressing the upper mold base 4 against the lower mold base 5, the upper mold base 4 will press the positioning component 6 into the recessed portion, so that the body 11 of the puncture needle 1 gradually approaches the first positioning block 2 and makes the body 11 of the puncture needle 1 contact with the first contact surface of the first abutment block 10, so that the body 11 can be rotated to the same direction and enter the first limiting channel 21, and then the sharp portion 12 of the puncture needle 1 enters the second limiting channel 31. Since the first limiting channel 21 and the second limiting channel 31 are connected to form a clamping channel for orienting the puncture needle 1, the sharp portion 12 and the body 11 can be adjusted to a fixed direction, thereby achieving the orienting effect on the puncture needle 1. After the orientation of the puncture needle 1 is completed, the handle is injection molded at the end of the body 11 of the puncture needle 1 away from the sharp portion 12, so that the holding direction of the handle and the direction of the sharp portion 12 are relatively fixed.

[0039] It can be understood that since the contact time of the puncture needle 1 with the first abutment block 10 is roughly the same each time, the puncture needle 1 needs to be placed on the positioning assembly 6 in roughly the same direction so that the puncture needle 1 can make the body 11 enter the first limiting channel 21 after contacting the first abutment block 10.

[0040] Specifically, the first direction and the second direction are arranged perpendicularly to each other.

[0041] A possible embodiment of the positioning assembly 6, see Figure 2-Figure 8, the positioning assembly 6 includes: a first fixing seat 61 and a second fixing seat 62. The recessed portion includes: a first sub-recessed portion 51 and a second sub-recessed portion 52. The first sub-recessed portion 51 and the second sub-recessed portion 52 are spaced apart along the second direction, the first fixing seat 61 is slidably disposed on the first sub-recessed portion 51 along the first direction, and the second fixing seat 62 is slidably disposed on the second sub-recessed portion 52 along the first direction. A first positioning channel 611 is provided on a side of the first fixing seat 61 facing the upper die seat 4, and the first positioning channel 611 penetrates the first fixing seat 61 along the second direction. A second positioning channel is provided on a side of the first fixing seat 61 facing the upper die seat 4, and the second positioning channel penetrates the second fixing seat 62 along the second direction. The first positioning channel 611 and the second positioning channel are on the same straight line. When positioned, the puncture needle 1 is clamped in the first positioning channel 611 and the second positioning channel to achieve the support and positioning effect of the first fixing seat 61 and the second fixing seat 62 on the puncture needle 1, so that the puncture needle 1 can be placed on the first fixing seat 61 and the second fixing seat 62 along the second direction.

[0042] Furthermore, the embodiment of the utility model further includes: a second abutment block 13. The second abutment block 13 is arranged on the side of the second positioning block 3 facing the lower mold base 5, and the second abutment block 13 has a second contact surface for contacting the body 11 to drive the body 11 to rotate, and the first contact surface and the second contact surface rotate the body at the same time, thereby realizing stable rotation of the body 11.

[0043] It is understandable that the first positioning block 2 is separated into two blocks on both sides by the first limiting channel 21, and the first abutment block 10 is arranged on one of the blocks. When placing the puncture needle 1, it is necessary to ensure that the opening of the sharp portion 12 of the puncture needle 1 faces away from the first abutment block 10.

[0044] Further, see Figure 8, the embodiment of the utility model further includes: a first elastic member 7 and a second elastic member 8. The lower mold base 5 is provided with a first sub-recess 51 and a second sub-recess 52. The first fixing seat 61 is slidably disposed in the first sub-recess 51, one end of the first elastic member 7 abuts against the bottom wall of the first sub-recess 51, and the other end of the first elastic member 7 abuts against the first fixing seat 61. The second fixing seat 62 is slidably disposed in the second sub-recess 52, one end of the second elastic member 8 abuts against the bottom wall of the second sub-recess 52, and the other end of the second elastic member 8 abuts against the second fixing seat 62. Wherein, when the upper mold base 4 and the lower mold base 5 are in the mold opening state, the first fixing seat 61 protrudes from the first sub-recess 51 under the action of the first elastic member 7, and the second fixing seat 62 protrudes from the second sub-recess 52 under the action of the second elastic member 8. At this time, the body 11 of the puncture needle 1 has not yet entered the first limiting channel 21 of the first positioning block 2. When the upper mold base 4 is pressed against the lower mold base 5, the upper mold base 4 presses the first fixing base 61 and the second fixing base 62, so that the first fixing base 61 and the second fixing base 62 are respectively retracted into the first sub-recess 51 and the second sub-recess 52, thereby making the body 11 of the puncture needle 1 enter the first limiting channel 21 of the first positioning block 2 and the sharp portion 12 enter the second limiting channel 31 of the second positioning block 3, so as to achieve the orienting effect on the puncture needle 1.

[0045] Furthermore, the first elastic member 7 and the second elastic member 8 are both springs.

[0046] In one possible embodiment, see Figure 5 , the first positioning channel 611 has a fifth side wall and a sixth side wall opposite to each other. A fifth curved surface 6111 is formed between the fifth side wall and the side of the first fixing seat 61 facing the upper die seat 4, and a sixth curved surface 6112 is formed between the sixth side wall and the side of the first fixing seat 61 facing the upper die seat 4. The arrangement of the fifth curved surface 6111 and the sixth curved surface 6112 enables the puncture needle 1 to be placed on the first fixing seat 61 and the second fixing seat 62 for positioning. Even if the puncture needle 1 is not placed in place, the body 11 of the puncture needle 1 can slide along the fifth curved surface 6111 or the sixth curved surface 6112 into the first positioning channel 611, thereby achieving positioning of the body 11 of the puncture needle 1.

[0047] Further, see Figure 3 and Figure 4, the first limiting channel 21 has a first side wall and a second side wall opposite to each other, a first curved surface 211 is formed between the first side wall and the side of the first positioning block 2 facing the upper die seat 4, and a second curved surface 212 is formed between the second side wall and the side of the first positioning block 2 facing the upper die seat 4. The arrangement of the first curved surface 211 and the second curved surface 212 enables the puncture needle 1 to enter the first limiting channel 21 by abutting against the first curved surface 211 or the second curved surface 212, so as to achieve the positioning of the body 11 of the puncture needle 1. It can be understood that during the turning process of the body 11, the first curved surface 211 and the second curved surface 212 push the puncture needle 1 at a tangential angle, so that the puncture needle 1 continues to rotate in the first limiting channel 21 until the puncture needle 1 rotates to a set angle, at which time the tangential thrust disappears, thereby completing the orientation.

[0048] Further, see Figure 6 and Figure 7 , the second limiting channel 31 has a third side wall and a fourth side wall opposite to each other; a third curved surface 311 is formed between the third side wall and the side of the second positioning block 3 facing the lower die base 5; a fourth curved surface 312 is formed between the fourth side wall and the side of the second positioning block 3 facing the lower die base 5. The arrangement of the third curved surface 311 and the fourth curved surface 312 enables the puncture needle 1 to enter the first limiting channel 21 by abutting against the third curved surface 311 or the fourth curved surface 312, so as to achieve the orientation effect on the sharp portion 12 of the puncture needle 1. It can be understood that during the turning process of the body, the third curved surface 311 and the fourth curved surface 312 push the puncture needle 1 at a tangential angle, so that the puncture needle 1 continues to rotate in the second limiting channel 31 until the puncture needle 1 rotates to the set angle, at which time the tangential thrust disappears, thereby completing the orientation.

[0049] Further, see Figure 7 , the second limiting channel 31 has a first end and a second end. The second positioning block 3 is provided with an avoidance hole 32 for avoiding the sharp portion 12. The first end of the second limiting channel 31 passes through the second positioning block 3, and the second end of the second limiting channel 31 is connected to the avoidance hole 32. Since the thickness of the end of the sharp portion 12 is the thinnest, the strength of the end of the sharp portion 12 is relatively low, so that the end of the sharp portion 12 is prone to deformation after collision. Therefore, the present application sets the avoidance hole 32 so that the end of the sharp portion 12 enters the avoidance hole 32 after the sharp portion 12 enters the second limiting channel 31, thereby avoiding the end of the sharp portion 12 from colliding with the second positioning block 3, so that the second limiting channel 31 will not deform the end of the sharp portion 12 when orienting the sharp portion 12.

[0050] Further, see Figure 1The present application further includes: a plurality of guide rods 9. The plurality of guide rods 9 are arranged on the lower die base 5, and a plurality of guide holes are provided on the upper die base 4. The plurality of guide rods 9 are slidably arranged in the plurality of guide holes one by one. The arrangement of the plurality of guide rods 9 plays a role in guiding the sliding of the upper die base 4 and the lower die base 5.

[0051] Specifically, the side surface of the upper die base 4 facing the lower die base 5 is arranged in parallel with the side surface of the lower die base 5 facing the upper die base 4, and the guide rod 9 is respectively perpendicular to the two side surfaces.

[0052] In summary, the embodiment of the utility model provides a puncture needle orienting mold, which, when the puncture needle 1 needs to be oriented, first adjusts the upper mold base 4 and the lower mold base 5 to the open mold state, and then places the puncture needle 1 on the positioning assembly 6 for positioning, so that the puncture needle 1 is placed along the second direction, and the puncture needle 1 body 11 enters the first limiting channel 21 to achieve the positioning of the puncture needle 1. Then, when it is necessary to orient the puncture needle 1, the upper mold base 4 is pressed against the lower mold base 5. In the process of pressing the upper mold base 4 against the lower mold base 5, the upper mold base 4 will press the positioning component 6 into the recessed portion, so that the body 11 of the puncture needle 1 gradually approaches the first positioning block 2 and makes the body 11 of the puncture needle 1 contact with the first contact surface of the first abutment block 10, so that the body 11 can be rotated to the same direction and enter the first limiting channel 21, and then the sharp portion 12 of the puncture needle 1 enters the second limiting channel 31. Since the first limiting channel 21 and the second limiting channel 31 are connected to form a clamping channel for orienting the puncture needle 1, the sharp portion 12 and the body 11 can be adjusted to a fixed direction, thereby achieving the orienting effect on the puncture needle 1. After the orientation of the puncture needle 1 is completed, the handle is injection molded at the end of the body 11 of the puncture needle 1 away from the sharp portion 12, so that the holding direction of the handle and the direction of the sharp portion 12 are relatively fixed.

[0053] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A puncture needle orientation mold, the puncture needle orientation mold having a first direction and a second direction intersecting each other, for orienting a puncture needle, the puncture needle comprising: The body and the sharp part are characterized in that they include: a first positioning block, a second positioning block, an upper die seat, a lower die seat, a first abutting block, and a positioning assembly for positioning the puncture needle; the upper die seat and the lower die seat are spaced along the first direction; the first positioning block is arranged on the side of the lower die seat opposite to the upper die seat; a recess is provided on the side of the lower die seat opposite to the upper die seat, and the positioning assembly is slidably arranged in the recess along the first direction; the second positioning block is arranged on the side of the upper die seat opposite to the lower die seat; the first positioning block has a first limiting channel adapted to the body, and the first limiting channel extends along the second direction and passes through the first positioning block; the first abutting block is arranged on the side of the first positioning block facing the upper die seat, and the first abutting block has a first contact surface for contacting with the body to drive the body to rotate; the second positioning block has a second limiting channel adapted to the sharp part, and the second limiting channel extends along the second direction and passes through one end of the second positioning block facing the first positioning block; the first positioning block and the second positioning block are spaced along the second direction; Wherein, when the upper mold base and the lower mold base are closed, the first limiting channel and the second limiting channel are connected to each other to form a clamping channel for orienting the puncture needle.

2. The puncture needle orientation mold according to claim 1, characterized in that: The positioning assembly includes: a first fixed seat and a second fixed seat; the recessed portion includes: a first sub-recessed portion and a second sub-recessed portion; the first sub-recessed portion and the second sub-recessed portion are spaced apart along the second direction, the first fixed seat is slidably disposed on the first sub-recessed portion along the first direction, and the second fixed seat is slidably disposed on the second sub-recessed portion along the first direction; a first positioning channel is provided on a side of the first fixed seat facing the upper mold seat, and the first positioning channel passes through the first fixed seat along the second direction; a second positioning channel is provided on a side of the first fixed seat facing the upper mold seat, and the second positioning channel passes through the second fixed seat along the second direction; the first positioning channel and the second positioning channel are on the same straight line.

3. The puncture needle orientation mold according to claim 2, characterized in that: Also includes: A first elastic member and a second elastic member; the first fixed seat is slidably disposed in the first sub-recessed portion, one end of the first elastic member abuts against the bottom wall of the first sub-recessed portion, and the other end of the first elastic member abuts against the first fixed seat; the second fixed seat is slidably disposed in the second sub-recessed portion, one end of the second elastic member abuts against the bottom wall of the second sub-recessed portion, and the other end of the second elastic member abuts against the second fixed seat.

4. The puncture needle orientation mold according to claim 3, characterized in that: The first elastic member and the second elastic member are both springs.

5. The puncture needle orientation mold according to claim 2, characterized in that: The first positioning channel has a fifth side wall and a sixth side wall opposite to each other; a fifth curved surface is formed between the fifth side wall and the side of the first fixing seat facing the upper mold seat; a sixth curved surface is formed between the sixth side wall and the side of the first fixing seat facing the upper mold seat.

6. The puncture needle orientation mold according to claim 1, characterized in that: The first limiting channel has a first side wall and a second side wall opposite to each other; a first curved surface is formed between the first side wall and the side of the first positioning block facing the upper mold base; a second curved surface is formed between the second side wall and the side of the first positioning block facing the upper mold base.

7. The puncture needle orientation mold according to claim 1, characterized in that: The second limiting channel has a third side wall and a fourth side wall opposite to each other; a third curved surface is formed between the third side wall and the side of the second positioning block facing the lower mold base; a fourth curved surface is formed between the fourth side wall and the side of the second positioning block facing the lower mold base.

8. The puncture needle orientation mold according to claim 1, characterized in that: The second limiting channel has a first end and a second end; the second positioning block is provided with an avoidance hole for avoiding the sharp portion; the first end of the second limiting channel passes through the second positioning block, and the second end of the second limiting channel is connected to the avoidance hole.

9. The puncture needle orientation mold according to claim 1, characterized in that: Also includes: A plurality of guide rods; the plurality of guide rods are arranged on the lower die base; a plurality of guide holes are opened on the upper die base; the plurality of guide rods are slidably arranged in the plurality of guide holes in a one-to-one correspondence.

10. The puncture needle orientation mold according to claim 1, characterized in that: Also includes: A second abutment block; the second abutment block is arranged on the side of the second positioning block facing the lower die seat, and the second abutment block has a second contact surface for contacting the body to drive the body to rotate.

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