Needle holding device

Abstract

The utility model provides a needle holding device, and relates to the technical field of medical instruments, and the needle holding device comprises a base which is fixed relative to the skin of a target body and is provided with two arc grooves which are oppositely arranged; the supporting disc is of an arc-shaped structure, the two ends of the supporting disc are provided with sliding blocks in sliding fit with the two oppositely-arranged arc grooves, and the sliding blocks slide in the arc grooves so that the supporting disc can rotate in the arc direction relative to the base; the needle holding clamp is provided with a body, a needle groove formed in the first face of the body and a clamping arm which is arranged on the second face of the body and extends away from the first face, and the clamping arm can be clamped on the supporting disc in a reciprocating sliding mode along the arc-shaped supporting disc; the locking assembly comprises a first locking structure used for locking the supporting disc and the base, a second locking structure used for locking the needle holding clamp and the supporting disc, and a third locking structure used for being matched with the needle groove to lock the medical needle. The stability of the medical needle in the operation process is enhanced, the operation burden of an operator is reduced, and the puncture accuracy and the operation treatment effect are improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a needle holding device. Background Technology

[0002] In percutaneous interventional therapy, medical needles such as puncture needles and ablation needles are the core tools of the procedure. Image-guided technology plays a crucial role, not only accurately locating the lesion area but also providing the surgeon with essential information for planning the puncture path. Based on imaging data, the surgeon must accurately calculate the puncture angle and determine the insertion point on the body surface, then precisely guide the medical needle into the target area along the predetermined puncture path. It is noteworthy that the stability of the medical needle during the procedure is a critical factor determining clinical efficacy.

[0003] However, the uneven weight distribution of the tail structure (including the handle, connecting wires, and other accessories) in current clinical practice of puncture and ablation needles causes the overall center of gravity of the instrument to shift backward. This design easily leads to two main problems during surgery: needle tail drooping and needle tip misalignment. These problems not only increase the difficulty of operation but may also directly affect the treatment outcome.

[0004] Currently, to overcome the problems with the aforementioned instruments, surgeons often need to manually maintain the position of the medical needle for extended periods during treatment. This method easily leads to surgeon fatigue and makes it difficult to ensure the continuous stability of the medical needle, thus increasing surgical risks and potentially affecting the final treatment outcome. Utility Model Content

[0005] The purpose of this application is to provide a needle holding device that enhances the stability of medical needles during surgery, thereby reducing the operator's workload and improving puncture accuracy and surgical treatment outcomes.

[0006] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description or may be learned by practice of this application.

[0007] According to a first aspect of this application, a needle-holding device is provided, comprising:

[0008] A base adapted to be fixed relative to the skin of a target body, the base having a puncture cavity for a medical needle to pass through and pierce the target body, the base having two oppositely arranged arcuate grooves;

[0009] The support plate has an arc-shaped structure and sliders at both ends that slide in the two oppositely arranged arc grooves. The support plate can rotate relative to the base along the arc direction by sliding the sliders in the arc grooves.

[0010] The needle holder has a body, a needle groove provided on a first surface of the body for inserting the medical needle, and a clamping arm provided on a second surface of the body and extending away from the first surface. The clamping arm can be slidably clamped on the support plate along the arc-shaped support plate.

[0011] The locking assembly includes a first locking structure for locking the support plate and the base, a second locking structure for locking the needle holder to the support plate, and a third locking structure for engaging with the medical needle groove to lock the needle.

[0012] In one exemplary embodiment of this application, the line connecting the centers of the two arcuate grooves of the base, the central axis of the support plate, and the extension line of the needle groove intersect at a point that coincides with the needle insertion point on the skin.

[0013] In one exemplary embodiment of this application, the groove surface of the needle groove is a tapered surface with the groove opening gradually decreasing along the direction from the first surface to the second surface.

[0014] In an exemplary embodiment of this application, the base has a plate-shaped substrate, and a pair of arc-shaped corner plates and a pair of bosses fixedly disposed on the substrate. The bosses are located below the corner plates, and the arc groove is formed between the corner plates and the bosses. The lower arc surface of the corner plates is the upper groove surface of the arc groove, and the upper arc surface of the bosses is the lower groove surface of the arc groove. The puncture cavity is formed in the middle of the substrate.

[0015] In one exemplary embodiment of this application, the first locking structure includes:

[0016] The first stud is fixedly disposed at the end of the support plate;

[0017] The first locking nut is used to engage with the first stud thread;

[0018] When the first locking nut is tightened, the first locking nut presses against the corner plate to achieve relative fixation between the support plate and the base.

[0019] In one exemplary embodiment of this application, the second locking structure includes:

[0020] The second stud is fixedly mounted on one of the clamping arms of the needle holder;

[0021] The second locking nut is used to engage with the threaded second stud.

[0022] When the second locking nut is tightened, the second locking nut presses against the support plate to achieve relative fixation between the needle holder and the support plate.

[0023] In one exemplary embodiment of this application, the third locking structure includes:

[0024] The third stud is fixedly disposed on the first surface of the needle holder and located outside the needle groove;

[0025] The third locking nut is used to engage with the threaded third stud.

[0026] When the third locking nut is tightened, the third locking nut presses against the medical needle to achieve relative fixation between the medical needle and the needle holder.

[0027] In an exemplary embodiment of this application, the third stud has a clearance groove along the direction of the medical needle, the clearance groove is connected to the needle groove, the third stud has a chamfer on the inner side of the clearance groove, and the third stud has a tapered surface on the outer side of the clearance groove.

[0028] In one exemplary embodiment of this application, the surfaces of both the corner plate and the support plate are provided with scale lines.

[0029] In one exemplary embodiment of this application, the base is fixed with at least three pointing elements in the puncture cavity, the at least three pointing elements having tips, and the tips of the at least three pointing elements pointing to the needle insertion point.

[0030] In one exemplary embodiment of this application, a medical tape is also included, which is fixedly disposed below the base. The medical tape is provided with a tear-off position on both sides of the base for easy removal of release paper, and a tape extension for lengthening the medical tape.

[0031] The exemplary embodiments of this application may have some or all of the following beneficial effects:

[0032] In a needle-holding device provided in the example embodiment of this application, firstly, the surgeon accurately calculates the puncture angle and determines the needle insertion point on the body surface based on imaging data or other methods, and then precisely guides the medical needle into the target area along a predetermined puncture path. Subsequently, the surgeon securely fixes the base to the patient's body surface, ensuring that the needle insertion point on the base roughly corresponds to the actual puncture insertion point. The surgeon first unlocks all locking components, then rotates the support plate to swing it on the base, and then slides the needle holder along the arc-shaped sliding surface of the support plate, thereby adjusting the spatial position of the needle holder to the puncture path of the medical needle. Subsequently, the surgeon locks the position of the support plate using a first locking structure, locks the position of the needle holder using a second locking structure, and fixes the medical needle and needle holder using a third locking structure. This provides good support for the medical needle during surgery, eliminating the need for prolonged manual support by the surgeon. Therefore, it not only improves the stability of the medical needle during surgery but also reduces the surgeon's workload, improving the accuracy of needle puncture and the surgical treatment effect.

[0033] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0034] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0035] Figure 1 This illustration shows a schematic diagram of a needle-holding device in a needle-holding state according to an embodiment of this application;

[0036] Figure 2 An exploded view of the first locking structure, the second locking structure, and the third locking structure in an embodiment of this application is shown.

[0037] Figure 3 A schematic diagram of the support disk structure in an embodiment of this application is shown;

[0038] Figure 4 A schematic diagram of the base structure in an embodiment of this application is shown;

[0039] Figure 5 A schematic diagram of the needle holder structure in an embodiment of this application is shown;

[0040] Figure 6 A side view of the needle holder in an embodiment of this application is shown.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Base; 11. Angle plate; 111. Upper groove surface; 12. Boss; 121. Lower groove surface; 2. Support plate; 21. Slider; 22. Bottom arc surface; 3. Needle holder; 31. Slide groove; 32. Needle groove; 4. First locking structure; 41. First stud; 42. First locking nut; 5. Second locking structure; 51. Second stud; 52. Second locking nut; 6. Third locking structure; 61. Third stud; 611. Clearance groove; 612. Chamfer; 613. Conical surface; 62. Third locking nut; 7. Scale line; 8. Pointer; 9. Medical tape; 91. Tear-off position; 92. Tape leg; 10. Medical needle. Detailed Implementation

[0043] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed descriptions will be omitted. Furthermore, the drawings are merely illustrative of this application and are not necessarily drawn to scale.

[0044] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples in the accompanying drawings. It is understood that if the device of the icon is flipped so that it is upside down, the component described as "upper" will become the component described as "lower." When a structure is "upper" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0045] The terms “a,” “one,” “the,” and “at least one” are used to indicate the existence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first” and “second” are used only as markers and are not a limitation on the number of objects.

[0046] Reference Figure 1 and Figure 2 As shown in the embodiments of this application, a needle holding device is provided, including:

[0047] The base 1 is adapted to be fixed relative to the skin of the target body. The base 1 has a puncture cavity for the medical needle 10 to pass through and puncture the target body. The base 1 has two oppositely arranged arc grooves.

[0048] The support plate 2 has an arc-shaped structure and two sliders 21 at both ends that slide in the two oppositely arranged arc grooves. The support plate 2 rotates relative to the base 1 in the arc direction by sliding the sliders 21 in the arc grooves.

[0049] The needle holder 3 has a body, a needle groove 32 provided on a first surface of the body for the medical needle 10 to pass through, and a clamping arm provided on a second surface of the body and extending away from the first surface. The clamping arm can be reciprocated and slidably clamped on the support plate 2 along the arc-shaped support plate 2.

[0050] The locking assembly includes a first locking structure 4 for locking the support plate 2 and the base 1, a second locking structure 5 for locking the needle holder 3 to the support plate 2, and a third locking structure 6 for cooperating with the needle groove 32 to lock the medical needle.

[0051] Furthermore, the medical needle 10 may be a puncture needle or an ablation needle. Of course, this is not limiting. In other embodiments, the medical needle 10 may also be other structures used for medical needles.

[0052] In the puncture interventional procedure, the operator first accurately calculates the puncture angle and determines the needle insertion point on the body surface based on imaging data or other methods. Then, the medical needle 10 is precisely inserted into the target area along the predetermined puncture path. Next, the operator fixes the base 1 to the patient's body surface, ensuring that the needle insertion point of the base 1 roughly corresponds to the actual puncture insertion point. The operator can support the medical needle 10 through the following adjustment mechanisms: 1) rotating the support plate 2 to adjust its tilt angle; 2) sliding the needle holder 3 on the support plate 2 to change its position. When the needle holder 3 is fully aligned with the puncture path of the medical needle 10, the locking components are activated: the first locking structure 4 fixes the position of the support plate 2, the second locking structure 5 locks the position of the needle holder 3, and the third locking structure 6 ensures a secure connection between the medical needle 10 and the needle holder 3. Therefore, the needle holding device of this application can provide good support for the medical needle 10, eliminating the need for the surgeon to manually support it for a long time. This not only improves the stability of the medical needle 10 during the operation, but also reduces the surgeon's workload, and improves the accuracy of the medical needle 10 puncture and the surgical treatment effect.

[0053] Reference Figure 2 , Figure 5 and Figure 6As shown in this embodiment, a needle groove 32 is formed through the first side of the needle holder 3. The medical needle 10 passes through the needle holder 3 through the needle groove 32. Specifically, the needle groove 32 and the third locking structure 6 are both located on the front side of the needle holder 3, while the second locking structure 5 and the clamping arm are both located on the back side of the needle holder 3. There are two clamping arms, and a sliding groove 31 is formed between the two clamping arms to allow sliding engagement with the support plate 2. The second locking structure 5 is fixedly mounted on one of the clamping arms of the needle holder 3. It can be understood that the first side is the front side of the needle holder 3, and the second side is the back side of the needle holder 3, but this is not a limitation.

[0054] Furthermore, the needle groove 32 points towards the center of the support plate 2 on the first surface of the needle holder 3, and the line connecting the centers of the two arc grooves of the base 1, the central axis of the support plate 2, and the extension line of the needle groove 32 intersect at a point that coincides with the skin entry point of the medical needle 10. Therefore, when using this device, a precise entry point for the medical needle 10 can be provided, thereby further improving the therapeutic effect of the surgery.

[0055] In this embodiment, the groove surface of the needle groove 32 is a tapered surface with the groove opening gradually decreasing from the first surface to the second surface. When the medical needle 10 passes through the needle groove 32, the medical needle 10 can abut against the two sides of the needle groove 32, and the needle groove 32 can also be used for medical needles 10 of different diameters. Therefore, setting the needle groove 32 as a tapered surface not only provides good stability for the medical needle 10, but also makes the needle groove 32 suitable for more medical needles 10 of different sizes, thus improving the practicality of the device.

[0056] Reference Figure 2 , Figure 3 and Figure 4 As shown in the embodiment of this application, the base 1 has a plate-shaped substrate and a pair of symmetrical rotary fitting structures. Specifically, the rotary fitting structure includes an arc-shaped corner plate 11 and a boss 12, both of which are connected and fixed to the upper surface of the base 1.

[0057] Furthermore, the boss 12 is located below the corner plate 11, and the arc groove is formed between the corner plate 11 and the boss 12. The lower arc surface of the corner plate 11 is the upper groove surface 111 of the arc groove, and the upper arc surface of the boss 12 is the lower groove surface 121 of the arc groove. The upper groove surface 111 and the lower groove surface 121 are concentrically arranged.

[0058] In this embodiment of the application, the two ends of the support disk 2 are provided with bottom arc surfaces 22. Specifically, the slider 21 is fixed on the outer side of both ends of the support disk 2. The upper surface of the slider 21 is arc-shaped and can be attached to the upper groove surface 111 to form a sliding fit. The bottom arc surface 22 is formed at the bottom of both ends of the support disk 2. The bottom arc surface 22 is attached to the lower groove surface 121 of the upper surface of the boss 12 to form a sliding fit.

[0059] Therefore, when the support plate 2 is rotated, the sliding engagement between the slider 21 and the corner plate 11, and the sliding engagement between the bottom arc surface 22 and the boss 12, provides good stability for the support plate 2, while also ensuring smooth rotation of the support plate 2 on the base 1 and convenient and quick angle adjustment. Based on the above structure, it can be understood that the line connecting the centers of the two bosses 12 at both ends of the support plate 2 is the axis of rotation of the support plate 2. Therefore, by adjusting the curvature of the upper groove surface 111 and the lower groove surface 121, the center height of the boss 12 can be adjusted along the longitudinal axis. Furthermore, it can be understood that when the center height of the boss 12 is adjusted to be at the same height as the needle insertion point, the intersection point formed by the rotation axis of the support plate 2 and the central axis of the needle groove 32 coincides with the needle insertion point.

[0060] Reference Figure 2 As shown in this embodiment, the first locking structure 4 is configured as two sets, with the two sets of first locking structures 4 located at both ends of the support disk 2. Of course, in other embodiments, the first locking structure 4 can be configured as one set and located at either end of the support disk 2. Specifically, the first locking structure 4 includes a first stud 41 and a first locking nut 42. The first stud 41 is fixedly connected to the outer side of the support disk 2, and the first stud 41 is threadedly connected to the first locking nut 42. When the first locking nut 42 is tightened, the first locking nut 42 is pressed against the surface of the corner plate 11 to achieve the positioning of the support disk 2; when it is necessary to rotate the support disk 2, the first locking nut 42 can be loosened again.

[0061] In this embodiment, the second locking structure 5 includes a second stud 51 and a second locking nut 52. The second stud 51 is fixed on a clamping arm on the second side of the needle holder 3. The second locking nut 52 is threadedly connected to the second stud 51. When the second locking nut 52 is tightened, the second locking nut 52 presses against the surface of the support plate 2 to achieve the positioning of the needle holder 3. When it is necessary to slide the needle holder 3, the second locking nut 52 can be loosened again.

[0062] In this embodiment, the third locking structure 6 includes a third stud 61 and a third locking nut 62. The third stud 61 is fixedly connected to the first surface of the needle holder 3, and the third locking nut 62 is threadedly connected to the third stud 61. When the third locking nut 62 is tightened, it presses against the surface of the medical needle 10 to achieve positioning of the medical needle 10. When it is necessary to slide the needle holder 3, the third locking nut 62 can be loosened again.

[0063] Furthermore, the third stud 61 has a relief groove 611 along the puncture path of the medical needle 10, and the relief groove 611 is connected to the needle groove 32. Therefore, the medical needle 10 can pass through the third stud 61 in the relief groove 611 and enter the needle groove 32. The relief groove 611 provides a relief for the medical needle 10, making it convenient for the operator to place the medical needle 10 in the needle groove 32.

[0064] Furthermore, the end of the third stud 61 has a chamfer 612 on the inner side of the relief groove 611. The chamfer 612 facilitates the guidance of the medical needle 10 into the needle groove 32. The end of the third stud 61 has a tapered surface 613 on the outer side of the relief groove 611. The tapered surface 613 facilitates the quick positioning and installation of the third locking nut 62, saving the operator's operation time.

[0065] Reference Figure 2 , Figure 3 and Figure 4 As shown in this embodiment, both the angle plate 11 and the support plate 2 are provided with scale lines 7. The surgeon can precisely adjust the angle of the support plate 2 and the specific position of the needle holder 3 using the scale lines 7. Furthermore, the surgeon can verify the accuracy of the puncture path of the medical needle 10 using the scales on the angle plate 11 and the support plate 2. If errors exist, the positions of the support plate 2 and the needle holder 3 can be further adjusted using the scale lines 7, thereby facilitating the calibration of the puncture position of the medical needle 10. Specifically, the scale lines 7 on the angle plate 11 are located on the outer side of the angle plate 11, and the scale lines 7 on the support plate 2 are located on the front side of the needle holder 3, facilitating observation by the surgeon.

[0066] In this embodiment, the puncture cavity is located at the center of the base 1. The puncture cavity is a circular hole, and its center coincides with the needle insertion point. At least three pointing elements 8 are provided within the through hole. In this application, there are three pointing elements 8. In other embodiments, there may be four, five, or even more pointing elements 8. Each pointing element 8 has a tip, and the tips of all pointing elements 8 point to the center of the through hole (i.e., the needle insertion point). The surgeon can determine the needle insertion point by the position indicated by the tip of the pointing element 8, thus facilitating the surgeon's determination of the needle insertion point.

[0067] Reference Figure 1 As shown in the embodiment of this application, a medical tape 9 is also included. The medical tape 9 is fixed below the base 1. The medical tape 9 has tear-off positions 91 on both sides of the base 1 for easy removal of release paper, and tape extension legs 92 for extending the medical tape 9. The tear-off positions 91 allow the surgeon to quickly remove the release paper adhered to the surface of the medical tape 9, saving surgical time. The tape extension legs 92 strengthen the adhesion between the needle holder and the skin, making it less likely for the medical needle 10 to tip over.

[0068] The needle-holding device described in this application solves the problems of easy tipping and needle tip displacement in clinical TCM needles 10. Furthermore, by clamping the medical needle 10, the device reduces external interference such as breathing and vibration during treatment, increasing dynamic stability during the procedure. It is convenient and quick to use, saving operation time.

[0069] Other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the embodiments thereof. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. A needle-holding device, characterized in that, include: A base adapted to be fixed relative to the skin of a target body, the base having a puncture cavity for a medical needle to pass through and pierce the target body, the base having two oppositely arranged arcuate grooves; The support plate has an arc-shaped structure and sliders at both ends that slide in the two oppositely arranged arc grooves. The support plate can rotate relative to the base along the arc direction by sliding the sliders in the arc grooves. The needle holder has a body, a needle groove provided on a first surface of the body for inserting the medical needle, and a clamping arm provided on a second surface of the body and extending away from the first surface. The clamping arm can be slidably clamped on the support plate along the arc-shaped support plate. The locking assembly includes a first locking structure for locking the support plate and the base, a second locking structure for locking the needle holder to the support plate, and a third locking structure for engaging with the needle groove to lock the medical needle.

2. The needle-holding device according to claim 1, characterized in that, The line connecting the centers of the two arc grooves of the base, the central axis of the support plate, and the extension line of the needle groove intersect at a point that coincides with the needle insertion point on the skin.

3. The needle-holding device according to claim 2, characterized in that, The groove surface of the needle groove is a conical surface with the groove opening gradually decreasing along the direction from the first surface to the second surface.

4. The needle-holding device according to claim 2 or 3, characterized in that, The base has a plate-shaped base, and a pair of arc-shaped corner plates and a pair of bosses fixedly disposed on the base. The bosses are located below the corner plates, and the arc groove is formed between the corner plates and the bosses. The lower arc surface of the corner plates is the upper groove surface of the arc groove, and the upper arc surface of the bosses is the lower groove surface of the arc groove. The puncture cavity is formed in the middle of the base.

5. The needle-holding device according to claim 4, characterized in that, The first locking structure includes: The first stud is fixedly disposed at the end of the support plate; The first locking nut is used to engage with the first stud thread; When the first locking nut is tightened, the first locking nut presses against the corner plate to achieve relative fixation between the support plate and the base.

6. The needle-holding device according to claim 1, characterized in that, The second locking structure includes: The second stud is fixedly mounted on one of the clamping arms of the needle holder; The second locking nut is used to engage with the threaded second stud. When the second locking nut is tightened, the second locking nut presses against the support plate to achieve relative fixation between the needle holder and the support plate.

7. The needle-holding device according to claim 4, characterized in that, The third locking structure includes: The third stud is fixedly disposed on the first surface of the needle holder and located outside the needle groove; The third locking nut is used to engage with the threaded third stud. When the third locking nut is tightened, the third locking nut presses against the medical needle to achieve relative fixation between the medical needle and the needle holder.

8. The needle-holding device according to claim 7, characterized in that, The third stud has a clearance groove along the direction of the medical needle, the clearance groove is connected to the needle groove, the third stud has a chamfer on the inner side of the clearance groove, and the third stud has a tapered surface on the outer side of the clearance groove.

9. The needle-holding device according to claim 4, characterized in that, Both the angle plate and the support plate have scale lines on their surfaces.

10. The needle-holding device according to claim 2, characterized in that, The base is fixed with at least three pointing elements in the puncture cavity. The at least three pointing elements have tips, and the tips of the at least three pointing elements point to the needle insertion point.

11. The needle-holding device according to claim 1, characterized in that, It also includes medical tape, which is fixed below the base. The medical tape has tear-off sections on both sides of the base for easy removal of release paper, and tape extensions for lengthening the medical tape.

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