Integrated needle guide
By using an integrated needle guide design, the problem of centerline deviation of the needle guide channel is solved by utilizing the rotating connection and limiting structure, thus achieving the stability and fit of the needle guide channel.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINGFANG PRECISION MEDICAL DEVICE SHENZHEN CO LTD
- Filing Date
- 2025-09-16
- Publication Date
- 2026-07-31
AI Technical Summary
The existing needle guide requires two sets of molds, which causes a deviation between the center line of the needle guide channel and the guide line.
Design an integrated guide needle device. Through the integrally molded first and second guide needle components, the guide needle channel can be detachably connected by a rotating connecting part and a limiting structure to avoid mold deviation.
This ensures that the centerline of the guide needle channel aligns with the guide line, providing a stable puncture path and avoiding errors caused by mold deviation.
Smart Images
Figure CN224572807U_ABST
Abstract
Description
Technical Field
[0001] This application relates to puncture medical devices, and more specifically, to an integrated needle guide. Background Technology
[0002] When using an external ultrasound probe for interventional diagnosis and treatment, the insertion of a puncture needle into the body to reach the puncture target requires guidance from an external puncture stent. To facilitate the selection of puncture needles of different diameters based on the puncture target and depth, the puncture stent is typically used with multiple guide needles of varying aperture sizes to accommodate different needle types. To achieve needle-stent separation after puncture, existing guide needles generally consist of two guide surfaces: one fixed and the other varying according to the needle size. The fixed part is formed using one set of molds, while the varying part is formed using another set of molds. Alternatively, different needle types may have their two parts formed separately. Because two sets of molds are required for one guide needle, a misalignment can occur between the centerline of the formed guide needle channel and the guide line. Utility Model Content
[0003] The technical problem to be solved by this application is to provide an integrated guide needle device that only requires one mold to be made, in order to address the above-mentioned deficiencies of the prior art.
[0004] The technical solution adopted by this application to solve its technical problem is as follows: An integrated needle guide device is proposed, comprising: a first needle guide component, wherein a needle guide groove is provided on a first side in the left-right direction, extending through both the upper and lower ends; a second needle guide component integrally formed with the first needle guide component, wherein a mating surface is provided on a second side in the left-right direction, which mates with the needle guide groove; a rotating connecting portion is integrally formed between one end of the upper and lower ends of the first needle guide component and the corresponding end of the second needle guide component, allowing the second needle guide component to rotate relative to the first needle guide component in the front-back direction; the second needle guide component, when rotated in the front-back direction towards the first needle guide component via the rotating connecting portion, can combine the mating surface with the needle guide groove to form a needle guide channel; and when rotated away from the first needle guide component, can separate the mating surface from the needle guide groove to open the needle guide channel; a corresponding limiting structure is also provided between the first needle guide component and the second needle guide component to detachably connect and fix the second needle guide component and the first needle guide component when the second needle guide component rotates relative to the first needle guide component until the mating surface combines with the needle guide groove to form a needle guide channel.
[0005] According to one embodiment of the integrated needle guide device described in this application, the rotating connection portion is integrally formed between the first side of the lower end of the first needle guide member in the front-back direction and the first side of the lower end of the second needle guide member in the front-back direction.
[0006] According to one embodiment of the integrated needle guide device of this application, the rotating connection portion has a shape that gradually thins from at least one of the two ends connecting the first and second needle guides toward the middle.
[0007] According to one embodiment of the integrated needle guide according to this application, the rotating connection portion has a connecting slope that slopes from at least one of the two ends connecting the first and second needle guides toward the center to form a crease in the center.
[0008] According to one embodiment of the integrated needle guide device described in this application, the rotating connection portion is an elastic connecting piece having an arc-shaped deformation space between the two ends connecting the first and second needle guide components.
[0009] According to one embodiment of the integrated needle guide device described in this application, the cooperating limiting structure includes a snap-fit position and an elastic snap-fit that are disposed opposite to the first needle guide and the second needle guide to engage with each other when the second needle guide rotates relative to the first needle guide until the mating surface engages with the needle guide groove to form a needle guide channel.
[0010] According to one embodiment of the integrated needle guide device described in this application, the cooperating limiting structure further includes at least one set of limiting protrusions and limiting holes disposed opposite to the first and second needle guides to engage with each other when the second needle guide rotates relative to the first needle guide until the mating surface engages with the needle guide groove to form a needle guide channel.
[0011] According to one embodiment of the integrated needle guide device described in this application, the cooperating limiting structure further includes a first limiting step and a second limiting step disposed opposite to the first needle guide and the second needle guide so as to abut against each other when the second needle guide rotates relative to the first needle guide until the mating surface and the needle guide groove combine to form a needle guide channel.
[0012] The integrated needle guide device of this application has the following beneficial effects: According to the embodiments of this application, the integrated needle guide device integrally forms a first needle guide and a second needle guide through a rotating connecting part. This rotating connecting part provides a rotating pair that allows the second needle guide to rotate relative to the first needle guide in the front-rear direction, thereby connecting the needle guide groove on the first needle guide and the mating surface on the second needle guide to form a needle guide channel. Reverse rotation opens the needle guide channel. This design of the rotating connecting part, allowing the first and second needle guides to be integrally formed using a single mold, effectively avoids the deviation between the center line of the needle guide channel and the guide line that might occur if the first and second needle guides were molded separately, providing a puncture path that aligns with the center of the guide line. Attached Figure Description
[0013] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the snap-fit structure of an integrated guide needle device according to an embodiment of this application; Figure 2 yes Figure 1 The diagram shows the open state structure of the integrated needle guide. Figure 3 yes Figure 1 The diagram shows another angle of the integrated guide needle in its open state; Figure 4 yes Figure 1 The diagram shows the planar structure of the integrated guide needle in its open state. Figure 5 This is a schematic diagram of the open state structure of an integrated needle guide according to another embodiment of this application.
[0014] Explanation of reference numerals in the attached diagram: 10, 10' - Integrated needle guide; 11 - First needle guide component; 111 - Needle guide groove; 112 - First guide cone surface; 113 - Snap-on position; 114 - First limiting step; 115 - First limiting hole; 116 - First limiting protrusion; 117 - Mounting structure; 12 - Second needle guide component; 121 - Mating surface; 122 - Second guide cone surface; 123 - Elastic snap-on; 1231 - Cantilever; 1232 - Operating part; 124 - Second limiting step; 125 - Second limiting protrusion; 126 - Second limiting hole; 13 - Rotating connection part; 131 - Connecting slope; 132 - Crease; 133 - Elastic connecting piece; 14 - Needle guide channel. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.
[0016] Figure 1 This diagram illustrates the engaged state structure of an integrated needle guide 10 according to an embodiment of this application. Figure 2 and Figure 3 This shows a schematic diagram of the integrated needle guide 10 in its open state. (See also...) Figures 1 to 3 As shown, the integrated needle guide 10 is mainly formed by a first needle guide 11, a second needle guide 12, and a rotating connecting part 13. The first side of the first needle guide 11 in the left-right direction opposite to the second needle guide 12 (e.g., Figure 1 The right side of the first guide needle 12 is provided with a guide needle groove 111 that runs through both the top and bottom ends. The second guide needle 12, on its left-right side opposite to the first guide needle 11, has a second side (e.g., on the right side of the first guide needle 11)... Figure 1The left side of the first guide needle 11 is provided with a mating surface 121 that mates with the guide needle groove 111. Furthermore, the first end of the upper and lower ends of the first guide needle 11 (e.g., the left end of the first guide needle 11) is provided with a mating surface 121 that mates with the guide needle groove 111. Figure 1 The lower end of the middle) corresponds to the first end of the second guide needle 12 (such as the lower end of the middle) on the front side. Figure 1 The lower end of the first guide needle 11 is rotatably connected to the front side of the first guide needle 11 via an integrally formed rotating connecting part 13, allowing the second guide needle 12 to rotate relative to the first guide needle 11 in the front-rear direction. When the second guide needle 12 rotates rearward (i.e., closer to the first guide needle 11) in the front-rear direction via the rotating connecting part 13, the mating surface 121 of the second guide needle 12 can be combined with the guide needle groove 111 of the first guide needle 11 to form a guide needle channel 14 (see...). Figure 1 (As shown). When the second guide needle 12 rotates forward (i.e., away from the first guide needle 11) in the front-rear direction via the rotating connecting part 13, the mating surface 121 of the second guide needle 12 can be separated from the guide needle groove 111 of the first guide needle 11, thereby opening the guide needle channel 14 (see...). Figure 2 (As shown). In addition, the first guide needle 11 may also be provided with a mounting structure 117 for mounting the entire integrated guide needle 10 on the puncture bracket used in conjunction.
[0017] In a specific embodiment, see Figure 4 As shown, the rotating connecting portion 13 is integrally formed between the lower front side of the first guide needle 11 and the corresponding lower front side of the second guide needle 12, so that the second guide needle 12 can rotate backward through the rotating pair provided by the rotating connecting portion 13 to be exactly opposite to the first guide needle 11. The rotating connecting portion 13 may have a shape that gradually thins from at least one of the two ends connecting the first guide needle 11 and the second guide needle 12 towards the middle, making the rotating connecting portion 13 easier to fold and realize the rotation of the second guide needle 12 relative to the first guide needle 11. Preferably, the upper or lower surface of the rotating connecting portion 13 may be provided as a connecting slope 131 that slopes from at least one of the two ends towards the middle, so as to form a crease 132 in the middle, so as to facilitate the rotation of the second guide needle 12 relative to the first guide needle 11 with the shield 132 as a rotating pair.
[0018] See further Figures 1 to 3 As shown, a matching limiting structure is also provided between the first guide needle member 11 and the second guide needle member 12, so that when the second guide needle member 12 rotates relative to the first guide needle member 11 until the mating surface 121 combines with the guide needle groove 111 to form the guide needle channel 14, the second guide needle member 12 and the first guide needle member 11 are detachably combined and fixed. See details. Figure 2 and Figure 3As shown, the limiting structures cooperating on the first guide needle member 11 and the second guide needle member 12 include a snap-fit position 113 and an elastic snap-fit 123 arranged opposite to each other, a first limiting step 114 and a second limiting step 124 arranged opposite to each other, a first limiting hole 115, a first limiting protrusion 116 and a second limiting protrusion 125, and a second limiting hole 126 arranged opposite to each other. When the second guide needle member 12 rotates relative to the first guide needle member 11 until the mating surface 121 engages with the guide needle groove 111 to form the guide needle channel 14, the first limiting hole 115, the first limiting protrusion 116 and the second limiting protrusion 125, and the second limiting hole 126 snap into each other, the first limiting step 114 and the second limiting step 124 abut against each other, and the snap-fit position 113 and the elastic snap-fit 123 engage with each other, thereby detachably connecting and fixing the second guide needle member 12 and the first guide needle member 11. See details. Figure 2 and Figure 3 In the embodiment shown, the latching position 113 extends outward from the upper end of the front side of the first guide needle member 11, the first limiting protrusion 116 extends outward from the lower side of the latching position 113 of the front side of the first guide needle member 11, the first limiting step 114 and the first limiting hole 115 are respectively formed on the rear side of the guide needle groove 111 of the first guide needle member 11, and the first limiting hole 115 preferably has two holes distributed vertically. Correspondingly, the elastic buckle 123 on the second guide needle 12 is disposed on the cantilever 1231 extending from the front side to the rear side of the first guide needle 11, opposite the buckle position 113 on the first guide needle 11. The second limiting hole 126 is opened on the front side of the second guide needle 32 opposite the first limiting protrusion 116 on the first guide needle 11. The second limiting step 124 and the second limiting protrusion 125 are respectively formed on the rear side of the mating surface 121 of the second guide needle 12 opposite the first limiting step 114 and the first limiting hole 115 on the first guide needle 11. Preferably, there are two second limiting protrusions 125 distributed vertically. When the second guide needle 12 rotates rearward relative to the first guide needle 11 until the second limiting step 124 abuts against the first limiting step 114, and the first limiting protrusion 116 and the second limiting protrusion 125 are respectively engaged in the second limiting hole 126 and the first limiting hole 115, and the elastic buckle 123 hooks onto the buckle position 113, the second guide needle 12 and the first guide needle 11 are mutually limited, and the mating surface 121 of the second guide needle 12 and the guide needle groove 111 of the first guide needle 11 combine to form the guide needle channel 14. Preferably, see Figure 2 and Figure 3 As shown, the inlet end of the guide groove 111 of the first guide needle member 11 forms a first guide cone surface 112, and the inlet end of the mating surface 121 of the second guide needle member 12 forms a second guide cone surface 122. When the second guide needle member 12 and the first guide needle member 11 are fixed together to form the guide needle channel 14 by combining the mating surface 121 with the guide groove 111, the second guide cone surface 122 and the first guide cone surface 112 together form a trumpet shape (see...). Figure 1(As shown), to facilitate needle insertion. When separating the second guide needle 12 from the first guide needle 11, simply press 1231 on the second guide needle 12 to disengage the elastic buckle 123 on the second guide needle 12 from the buckle position 113, and the second guide needle 12 can be rotated forward to separate from the first guide needle 11, thereby opening the guide needle channel 14. To facilitate the pressing operation, an operating part 1232 is also provided on the cantilever 1231. The integrated guide needle device 10 according to the above embodiment of this application is made of plastic material. The first guide needle 11 and the second guide needle 12 are rotatably connected by a rotating joint provided by the rotating connecting part 13, so that the first guide needle 11 and the second guide needle 12 are integrally formed by a set of molds. This can effectively avoid the deviation between the center line of the guide needle channel 14 and the guide line that may be caused by the first guide needle 11 and the second guide needle 12 being molded separately, and provide a puncture path that matches the center of the guide line.
[0019] Figure 5 A schematic diagram of the open state structure of an integrated needle guide 10' according to another embodiment of this application is shown. See also Figure 5 As shown, the integrated needle guide 10' has the same characteristics as described above. Figure 1-4 The integrated needle guide 10 in the illustrated embodiment has a basically the same structure, and is also integrally formed by the first needle guide 11, the second needle guide 12 and the rotating connecting part 13. The only difference is that the rotating connecting part 13 is an elastic connecting piece 133 connected between the first needle guide 11 and the second needle guide 12. The elastic connecting piece 133 has an arc-shaped deformation space between the two ends connecting the first needle guide 11 and the second needle guide 12, so that the second needle guide 12 can rotate back and forth relative to the first needle guide 11 through the elastic deformation of the elastic connecting piece 133.
[0020] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An integrated needle guide, characterized in that, include: The first guide needle component has a guide needle groove that runs through both the upper and lower ends on the first side in the left-right direction. A second guide needle component integrally formed with the first guide needle component, wherein a mating surface that mates with the guide needle groove is provided on the second side in the left-right direction of the second guide needle component; One of the upper and lower ends of the first guide needle member and the corresponding end of the second guide needle member are integrally formed with a rotating connection part that allows the second guide needle member to rotate relative to the first guide needle member in the front-back direction. The second guide needle member can rotate in the front-back direction towards the first guide needle member through the rotating connection part to combine the mating surface with the guide needle groove to form a guide needle channel. It can also rotate in the direction away from the first guide needle member to separate the mating surface from the guide needle groove and open the guide needle channel. The first guide needle member and the second guide needle member are further provided with a matching limiting structure so that when the second guide needle member rotates relative to the first guide needle member until the mating surface combines with the guide needle groove to form a guide needle channel, the second guide needle member and the first guide needle member are detachably combined and fixed.
2. The unitary needle guide of claim 1, wherein, The rotating connection portion is integrally formed between the first side of the lower end of the first guide needle member in the front-back direction and the first side of the lower end of the second guide needle member in the front-back direction.
3. The unitary needle guide of claim 2, wherein, The rotating connection portion has a shape that gradually thins from at least one of the two ends connecting the first guide needle and the second guide needle towards the middle.
4. The unitary needle guide of claim 3, wherein, The rotating connection has a connecting slope that slopes from at least one of the two ends connecting the first guide needle and the second guide needle toward the middle, so as to form a crease in the middle.
5. The unitary needle guide of claim 2, wherein, The rotating connection part is an elastic connecting piece with an arc-shaped deformation space between the two ends connecting the first guide needle and the second guide needle.
6. The unitary needle guide of claim 1, wherein, The matching limiting structure includes a snap-fit position and an elastic snap-fit that are disposed opposite to the first guide needle member and the second guide needle member to engage with each other when the second guide needle member rotates relative to the first guide needle member until the mating surface engages with the guide needle groove to form a guide needle channel.
7. The integral needle guide of claim 6 wherein, The matching limiting structure further includes at least one set of limiting protrusions and limiting holes that are disposed opposite to the first guide needle and the second guide needle so that when the second guide needle rotates relative to the first guide needle until the mating surface engages with the guide needle groove to form a guide needle channel, they engage with each other.
8. The integral needle guide of claim 7, wherein, The corresponding limiting structure further includes a first limiting step and a second limiting step disposed opposite to the first guide needle and the second guide needle, so as to abut against each other when the second guide needle rotates relative to the first guide needle until the mating surface and the guide needle groove combine to form a guide needle channel.