Porous needle guider and puncture frame

Abstract

The utility model relates to a multi-hole needle guiding device and a puncture frame. The multi-hole needle guiding device comprises a puncture needle base and a guiding block, the guiding block is installed in a guiding block groove of the puncture needle base, detachable connection is formed through a limiting structure, and therefore the freedom degree of movement of the guiding block relative to the puncture needle base is limited; at least two puncture needle grooves are formed in the guide block, and at least two puncture holes with different sizes can be formed by switching the at least two puncture needle grooves to be matched with the puncture contact surface of the guide block groove, so that puncture needles with different specifications can pass through the puncture holes. According to the puncture frame with the multi-hole needle guiding device, one set of puncture frame can meet the requirements of puncture needles of different specifications, material purchasing and management cost is reduced, cleaning is convenient, needle frame separation is convenient, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a porous needle guide and a puncture stand using the device. Background Art

[0002] Currently, the puncture needle guide structure of the puncture holder mainly uses a guide block structure that can be removed from the puncture holder. The guide block is equipped with a puncture needle slot or guide hole. After the guide block is locked to the puncture holder, it forms a puncture hole to accommodate the corresponding puncture needle. When a puncture needle of a different size is needed, the guide block with a different puncture needle slot needs to be replaced. A set of products needs to be equipped with multiple guide blocks to meet usage needs, resulting in a large number of accessories, which are easy to lose, and also increases production costs and user management costs. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a porous needle guide with multiple needle slots and convenient cleaning and management, and a puncture stand using the device, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: a porous needle guide is proposed, comprising a puncture needle seat and a guide block, wherein: a guide block groove is formed on the puncture needle seat and passes through both ends along the puncture direction, and a puncture contact surface is formed in the guide block groove; the guide block has an outer surface that matches the shape of the guide block groove so as to be at least partially accommodated in the guide block groove; the outer surface of the guide block is provided with at least two puncture needle grooves of different sizes passing through both ends along the puncture direction, and the guide block can switch the at least two puncture needle grooves by relative rotation in the guide block groove. A puncture needle groove in the puncture needle groove cooperates with the puncture contact surface in the guide block groove to form a puncture hole; an annular groove is provided on the outer surface of the guide block in a circumferential direction, the bottom surface of the annular groove forms a pressing surface, and the front and rear sides of the annular groove in the puncture direction form limiting side surfaces, and the puncture needle seat is threadedly connected to a screw on one side of the guide block groove that can be rotated relative to the puncture needle seat to extend into or exit the guide block groove. When the end of the screw enters the guide block groove and then is inserted into the annular groove of the guide block and presses against the pressing surface, the guide block is limited in the guide block groove.

[0005] According to one embodiment of the present application, the position of the pressing surface in the annular groove where the end of the screw pushes against the pressing surface avoids the puncture needle groove or is in the puncture needle groove.

[0006] According to one embodiment of the present application, the position where the end of the screw pushes against the pressing surface in the annular groove is located slightly above the pressing surface.

[0007] According to one embodiment of the present application, at least two conical grooves corresponding to the at least two puncture needle grooves are formed on the pressing surface within the annular groove of the guide block, and the end of the screw is screwed into the annular groove of the guide block and then tightened in one of the conical grooves.

[0008] According to one embodiment of the present application, a clamping support surface is formed on the other side of the guide block groove opposite to the screw rod. When the end of the screw rod presses against the clamping surface in the annular groove, the outer surface of the guide block presses against the clamping support surface.

[0009] According to one embodiment of the present application, the front end of the puncture needle seat is provided with at least one protrusion extending into the guide block groove, and at least two grooves corresponding to the at least two puncture needle grooves are formed on the front end surface of the guide block. After the guide block is placed in the guide block groove so that the protrusion is stuck in the corresponding grooves of the at least two grooves, the guide block is restricted from moving forward along the puncture direction, and the annular groove of the guide block faces the screw.

[0010] According to one embodiment of the present application, the cross section of the guide block is circular, rectangular, or polygonal.

[0011] To solve the technical problem, the present invention further provides a puncture stand, which includes a fixed structure assembled and connected to the ultrasound probe, and also includes the porous needle guide as described above, wherein the porous needle guide is installed on the fixed structure.

[0012] By adopting the porous needle guide and the puncture rack with the porous needle guide of the utility model, a set of puncture racks can meet the needs of puncture needles of different specifications, reducing material procurement and management costs, and is convenient to clean and separate the needle rack, with a simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0014] Figure 1 This is a schematic diagram of the overall structure of a puncture stand according to an embodiment of the present invention;

[0015] Figure 2 yes Figure 1 A schematic diagram of the partial structure of the middle guide block and the puncture needle seat at an angle of separation;

[0016] Figure 3 yes Figure 1 A schematic diagram of the partial structure of the middle guide block and the puncture needle seat at another angle;

[0017] Figure 4 yes Figure 1 A cross-sectional view of the structure of the middle guide block and the puncture needle seat;

[0018] Figure 5 This is a cross-sectional view of the structure of the guide block and the puncture needle seat in another embodiment of the present application.

[0019] Explanation of the accompanying numbers: 1-puncture frame; 10-porous needle guide; 11-puncture needle seat; 111-guide block groove; 1111-puncture contact surface; 1112-pressing support surface; 112-protruding column; 113-screw; 1131-end; 1132-side circumferential surface; 12-guide block; 121-outer surface; 122, 122'-puncture needle groove; 123, 123'-groove; 124-annular groove; 1241-pressing surface; 1242-limiting side surface; 1243-conical groove; 13-puncture hole; 20-fixing structure; 30-puncture needle; 31-puncture direction. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] Figure 1 FIG. 1 shows the overall structure of the puncture frame 1 according to an embodiment of the present invention. Figure 1 As shown, the puncture frame 1 includes a porous needle guide 10 and a fixed structure 20. The fixed structure 20 can be assembled and connected to an ultrasonic probe (not shown in the figure). The porous needle guide 10 is installed and connected to the fixed structure 10 to guide the puncture needle 30 to move along the puncture direction 31.

[0022] Figure 2-Figure 4 The specific structure of the porous needle guide 10 is further shown. Figure 2-Figure 4 As shown, the porous needle guide 10 includes a puncture needle holder 11 and a guide block 12. The puncture needle holder 11 is mounted on a fixed structure 20. A guide block groove 111 is formed on the puncture needle holder 11, extending through both ends along the puncture direction 31. The guide block 12 has an outer surface 121 that matches the shape of the guide block groove 111 and is at least partially accommodated within the guide block groove 111. The outer surface 121 of the guide block 12 is provided with a plurality (at least two) puncture needle grooves 122, 122' extending through both ends along the puncture direction 31. The plurality of puncture needle grooves 122, 122' are spaced apart and of varying sizes to accommodate puncture needles 30 of different specifications. The guide block 12 can rotate relative to the guide block groove 111, thereby switching one of the plurality of puncture needle grooves 122, 122' to cooperate with the puncture contact surface 1111 formed by the guide block groove 111 to enclose the puncture hole 13.

[0023] See further Figure 2-Figure 4As shown, the porous needle guide 10 is also provided with a limiting structure that restricts the freedom of movement of the guide block 12 within the guide block groove 111. Specifically, the outer surface of the guide block 12 is circumferentially defined between its two ends. The bottom surface of the annular groove 124 forms a pressing surface 1241, and the front and rear sides of the annular groove 124 in the puncture direction form limiting side surfaces 1242. Correspondingly, a screw 113 is threadedly connected to one side of the guide block groove 111 of the puncture needle holder 11 in a direction perpendicular to the puncture direction 31. The screw 113 can rotate relative to the puncture needle holder 11 to extend into or out of the guide block groove 111. The screw rod 113 is screwed into the guide block groove 111 and then inserted into the annular groove 124 of the guide block 12, so that the end 1131 of the screw rod 113 presses against the pressing surface 1241 in the annular groove 124, thereby confining the guide block 12 in the guide block groove 111 and limiting its freedom of rotation and movement in the guide block groove 111. Figure 4 As shown, the guide block groove 111 further includes a pressing support surface 1112 on the other side opposite the screw 113. When the end 1131 of the screw 113 presses against the pressing surface 1241 within the annular groove 124, the outer surface 121 of the guide block 12 abuts against the pressing support surface 1112. The position where the screw 113 presses against the pressing surface 1241 can avoid the puncture needle slot, or it can press against the puncture needle slot to prevent the puncture needle 30 from being inserted into the wrong puncture needle slot. Furthermore, the side circumferential surface 1132 of the screw 113 abuts against the limiting side surface 1242 of the annular groove 124, further limiting the forward and backward movement of the guide block 12 in the puncture direction 31. Furthermore, the position where the end 1131 of the screw 113 is screwed into the annular groove 124 and pressed against the pressing surface 1241 is preferably located slightly above the pressing surface 1241, which further limits the upward movement of the guide block 12 and prevents the guide block 12 from falling out of the guide block groove 111. After the screw 113 is unscrewed and exits the annular groove 124, the guide block 12 can be removed from the puncture needle holder 11, facilitating the separation of the puncture needle 30 from the puncture holder 1 and the replacement of puncture needles of other specifications. In addition, all parts are exposed, making them easy to clean and sterilize.

[0024] See also Figure 1-Figure 3As shown, to facilitate the insertion and positioning of the guide block 12 into the guide block groove 111, a boss 112 is provided on one side of the front end of the puncture needle holder 11, extending into the guide block groove 111. Accordingly, a plurality of grooves 123, 123' are formed on the front end surface of the guide block 12, corresponding to the plurality of puncture needle grooves 122, 122', and engaging with the boss 112. Once the guide block 12 is placed into the guide block groove 111 and the boss 112 engages with one of the plurality of grooves 123, 123', the guide block 12 is restricted from further forward movement in the puncture direction 31. At this point, the annular groove 124 of the guide block 12 is aligned with the screw 113. Furthermore, the plurality of grooves 123, 123' are open, allowing the guide block 12 to be removed from the guide block groove 111 of the puncture needle holder 11. Furthermore, when the groove 123 of the guide block 12 engages with the boss 112 on the puncture needle holder 11, the puncture needle groove 122 on the guide block 12 and the puncture contact surface 1111 on the guide block groove 111 of the puncture needle holder 11 can enclose a puncture hole 14. After the groove 123 of the guide block 12 is removed from the boss 112 on the puncture needle holder 11, the groove 123' of the guide block 12 engages with the boss 112, and the puncture needle groove 122' of the guide block 12 and the puncture contact surface 1111 of the guide block groove 111 can enclose another puncture hole of a different size. The different puncture needle grooves on the guide block 12 can be of different sizes and, in combination with the puncture contact surface 111 in the guide block groove 111, enclose multiple puncture holes of different sizes to accommodate puncture needles 30 of different specifications for puncture. Using this multi-needle slot puncture stand eliminates the need for multiple guide blocks to accommodate puncture needles of varying specifications, reducing the manufacturer's material procurement and management costs and alleviating the user's accessory management workload. According to various embodiments of the present application, the front end of the puncture needle holder 11 may further include a protrusion 112 on either side that extends into the guide block slot 111 and cooperates with corresponding two of the multiple grooves 123, 123' formed on the front end surface of the guide block 12 to limit the forward movement of the guide block 12 relative to the guide block slot 111 along the puncture direction 31. The two protrusions 112 may also block the puncture needle slots on both sides of the guide block 12 within the non-ultrasonic pattern plane to prevent the puncture needle 30 from accidentally puncturing.

[0025] Figure 5 FIG1 shows a cross-sectional view of the structure of the guide block 12 and the puncture needle seat 11 according to another embodiment of the present application. Figure 5 As shown, compared to Figure 4 In the embodiment shown, the guide block 12 is further formed with a plurality of tapered grooves 1243 corresponding to the plurality of puncture needle grooves 122, 122' on the pressing surface 1241. The front end 1131 of the screw 113 is screwed into the annular groove 124 of the guide block 12 and then pressed against a corresponding tapered groove 1243. This not only more effectively presses the guide block 12, but also more effectively limits the rotation and movement of the guide block 12, thereby improving the puncture performance.

[0026] Figure 1-Figure 5 In the porous needle guide 10 of the illustrated embodiment, the guide block 12 has a circular cross-section, and a plurality of puncture needle slots 122, 122' are arranged along its circumference. By rotating the guide block 12, one of the plurality of puncture needle slots 122, 122' can be switched to cooperate with the puncture contact surface 1111 in the guide block slot 111 to enclose the puncture hole 13. It will be appreciated by those skilled in the art that, according to different embodiments of the present invention, the guide block 12 can also be designed in a rectangular (e.g., rectangular, square) or polygonal shape to facilitate the arrangement of a plurality of puncture needle slots on the circumference, and the guide block slot 111 on the puncture needle holder 11 can be designed in a shape that matches the guide block 12.

[0027] In the porous needle guide of the present invention, a guide block is installed in the guide block slot of the puncture needle holder and is detachably connected by a limiting structure, thereby limiting the freedom of movement of the guide block relative to the puncture needle holder. At least two puncture needle slots are provided on the guide block. By switching the at least two puncture needle slots to cooperate with the puncture contact surface of the guide block slot, at least two puncture holes of different sizes can be formed to accommodate puncture needles of different specifications. Therefore, using the puncture rack with the porous needle guide of the present invention, a set of puncture racks can meet the needs of puncture needles of different specifications, reducing material procurement and management costs, and facilitating cleaning and needle holder separation. It has a simple structure and is easy to operate.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A porous needle guide, comprising a puncture needle seat and a guide block, characterized in that: The puncture needle seat is formed with a guide block groove extending through both ends along the puncture direction, and a puncture contact surface is formed in the guide block groove; the guide block has an outer surface that matches the shape of the guide block groove so as to be at least partially accommodated in the guide block groove, and the outer surface of the guide block is provided with at least two puncture needle grooves of different sizes extending through both ends along the puncture direction, and the guide block can rotate relative to the guide block groove to switch one of the at least two puncture needle grooves to cooperate with the puncture contact surface in the guide block groove to enclose a puncture hole; The outer surface of the guide block is provided with an annular groove around the circumference, the bottom surface of the annular groove forms a pressing surface, and the front and rear sides of the annular groove in the puncture direction form limiting side surfaces. The puncture needle seat is threadedly connected to a screw on one side of the guide block groove, which can be rotated relative to the puncture needle seat to extend into or exit the guide block groove. When the end of the screw enters the guide block groove and then is inserted into the annular groove of the guide block and presses against the pressing surface, the guide block is limited in the guide block groove.

2. The porous needle guide according to claim 1, characterized in that The position of the pressing surface in the annular groove where the end of the screw rod presses against the pressing surface avoids the puncture needle groove or is in the puncture needle groove.

3. The porous needle guide according to claim 1, characterized in that The position where the end of the screw pushes against the pressing surface in the annular groove is located slightly above the pressing surface.

4. The porous needle guide according to claim 1, characterized in that At least two tapered grooves corresponding to the at least two puncture needle grooves are formed on the pressing surface in the annular groove of the guide block. The end of the screw is screwed into the annular groove of the guide block and then pressed against one of the tapered grooves.

5. The porous needle guide according to claim 1, characterized in that The guide block groove is further formed with a pressing support surface on the other side opposite to the screw rod. When the end of the screw rod presses against the pressing surface in the annular groove, the outer surface of the guide block presses against the pressing support surface.

6. The porous needle guide according to claim 1, characterized in that The front end of the puncture needle seat is provided with at least one protrusion extending into the guide block groove, and at least two grooves corresponding to the at least two puncture needle grooves are formed on the front end surface of the guide block. After the guide block is placed in the guide block groove so that the protrusion is stuck in the corresponding grooves of the at least two grooves, the guide block is restricted from moving forward along the puncture direction, and the annular groove of the guide block faces the screw.

7. The porous needle guide according to claim 1, characterized in that The cross section of the guide block is circular, rectangular, or polygonal.

8. A puncture stand, comprising a fixing structure assembled and connected to an ultrasound probe, characterized in that: It also includes a porous needle guide as described in any one of claims 1 to 7, wherein the porous needle guide is mounted on the fixed structure.

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