Medical puncture needle

Abstract

The utility model provides a medical puncture needle which comprises a needle body and a grab handle connected to one end of the needle body, a connecting rod is arranged at the end, facing the grab handle, of the needle body, a connecting groove matched with the connecting rod is formed in the end of the grab handle so that the connecting rod can be inserted into the connecting groove, and a first electrode and a second electrode are arranged on the two sides of the puncture end of the needle body respectively. The end part of the connecting rod is provided with a third electrode and a fourth electrode, the first electrode and the third electrode are electrically connected to form a first electrode group, the second electrode and the fourth electrode are electrically connected to form a second electrode group, and an electric signal measuring part is arranged in the grab handle. The first electrode group and the second electrode group are electrically connected with the electric signal measuring part; the accuracy in the puncture process is improved, meanwhile, the needle body and the grab handle can be conveniently detached and replaced, and it is guaranteed that cross infection cannot occur between different patients.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a medical puncture needle. Background Art

[0002] Surgery often involves using puncture tools to puncture human tissue and establish a channel. This operation is usually a blind operation, and its success depends on the doctor's experience. It cannot be judged objectively and accurately, making it difficult to achieve precise control of the surgical process.

[0003] In the prior art, a variety of monitoring methods have been established for puncture or bone channel establishment. Usually, electrode pairs are used to monitor the electrical signals of the tissue, such as resistance, current, voltage, etc., and directly judge based on the size of the electrical signals such as resistance, current, voltage, etc., and give corresponding visual or auditory indications, thereby roughly indicating the position of the puncture needle to the doctor.

[0004] In order to prevent cross infection between different patients, existing puncture needles are all disposable. However, since the puncture needle has an additional electrical signal acquisition mechanism, the cost of using a single puncture needle is greatly increased, and the single cost cannot be reduced by multiple uses. If the electrical signal acquisition mechanism is not added, the accuracy of the puncture process will be correspondingly reduced, and the risk of the puncture operation will be increased. Utility Model Content

[0005] The purpose of the utility model is to provide a medical puncture needle which improves the accuracy during the puncture process and allows the needle body and the handle to be easily disassembled and replaced, thereby ensuring that cross infection does not occur between different patients.

[0006] In order to solve the above technical problems, the utility model provides a medical puncture needle, comprising a needle body and a handle connected to one end of the needle body, the needle body having a connecting rod at the end facing the handle, and a connecting groove matching the connecting rod is provided at the end of the handle so that the connecting rod can be inserted into the connecting groove, a first electrode and a second electrode are respectively provided on both sides of the puncture end of the needle body, the end of the connecting rod has a third electrode and a fourth electrode, and the first electrode and the third electrode are electrically connected to form a first electrode group, and the second electrode and the fourth electrode are electrically connected to form a second electrode group, and an electrical signal measuring part is built into the handle so that the first electrode group and the second electrode group are both electrically connected to the electrical signal measuring part.

[0007] Furthermore, a connecting ring is provided at one end of the handle facing the needle body, a clamping ring is rotatably provided on the outer periphery of the needle body, and the clamping ring is threadedly matched with the connecting ring.

[0008] Furthermore, a limiting ring is provided along the circumferential direction at one end of the needle body close to the handle, so that the limiting ring limits the clamping ring.

[0009] Furthermore, the connecting rod has an elliptical structure.

[0010] Furthermore, a hollow groove is opened on the side of the handle, and the hollow groove corresponds to the connecting rod, so that the connecting rod can display information at the position of the hollow groove.

[0011] Furthermore, the handle is provided with an inner arc structure along the circumference.

[0012] Furthermore, the end of the handle away from the needle body has a spherical structure.

[0013] Furthermore, a display screen is provided on the side of the handle, and the display screen is used to display the detection results of the electrical signal measuring part.

[0014] The beneficial effect of the present utility model is that the medical staff holds the handle in position, and then plugs the end of the needle body with the connecting rod into the connecting groove, so that the connecting rod is plugged into the connecting groove to complete the connection between the handle and the needle body. When the puncture needle is used, the first electrode group and the second electrode group are measured for real-time electrical signals through the electrical signal measuring part, that is, the puncture end of the puncture needle is first inserted into the bone tissue. At this time, the first electrode group and the second electrode group are electrically connected to the electrical signal measuring part, so that when the first electrode group and the second electrode group are energized, the current circulates along the electrical signal measuring part, the third electrode, the first electrode, the second electrode, the fourth electrode, and the electrical signal measuring part in turn, and then the changes in the electrical signal are monitored in real time by the electrical signal measuring part to determine whether the puncture position of the puncture needle is accurate.

[0015] At the same time, since the needle body and the handle are detachably connected, the needle body can be directly replaced after the operation is completed without replacing the entire puncture needle, which can effectively reduce the cost of using the puncture needle and improve the accuracy of puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a side view of the present utility model.

[0018] Figure 3 This utility model Figure 2 Section view along line AA.

[0019] Figure 4 This utility model Figure 3 A partial enlarged view of point A in the middle.

[0020] Figure 5 It is a structural diagram of the needle body in the utility model.

[0021] Figure numerals: 1. needle body; 2. handle; 3. connecting rod; 4. connecting groove; 5. first electrode; 6. second electrode; 7. third electrode; 8. fourth electrode; 9. connecting ring; 10. snap ring; 11. limiting ring; 12. hollow groove; 13. inner arc structure; 14. spherical structure; 15. display screen. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0023] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0024] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0025] like Figure 1-Figure 5 The utility model provides a medical puncture needle, comprising a needle body 1 and a handle 2 connected to one end of the needle body 1. The needle body 1 has a connecting rod 3 at the end facing the handle 2, and a connecting groove 4 matching the connecting rod 3 is provided at the end of the handle 2 so that the connecting rod 3 can be inserted into the connecting groove 4. A first electrode 5 and a second electrode 6 are respectively provided on both sides of the puncture end of the needle body 1, and a third electrode 7 and a fourth electrode 8 are provided at the end of the connecting rod 3. The first electrode 5 and the third electrode 7 are electrically connected to form a first electrode group, and the second electrode 6 and the fourth electrode 8 are electrically connected to form a second electrode group. The handle 2 has a built-in electrical signal measuring part so that the first electrode group and the second electrode group are both electrically connected to the electrical signal measuring part.

[0026] The medical staff holds the handle, and then plugs the end of the needle body with the connecting rod into the connecting groove, so that the connecting rod is plugged into the connecting groove to complete the connection between the handle and the needle body. When using the puncture needle, the first electrode group and the second electrode group are measured for real-time electrical signals through the electrical signal measuring part, that is, the puncture end of the puncture needle is first inserted into the bone tissue. At this time, the first electrode group and the second electrode group are electrically connected to the electrical signal measuring part, so that when the first electrode group and the second electrode group are energized, the current circulates along the electrical signal measuring part, the third electrode, the first electrode, the second electrode, the fourth electrode, and the electrical signal measuring part in turn, and then the changes in the electrical signal are monitored in real time by the electrical signal measuring part to determine whether the puncture direction of the puncture needle is accurate.

[0027] At the same time, since the needle body and the handle are detachably connected, the needle body can be directly replaced after the operation is completed without replacing the entire puncture needle, which can effectively reduce the cost of using the puncture needle and improve the accuracy of puncture.

[0028] It is worth mentioning that since the electrical signals in the middle and edge of the bone tissue are different, when the electrical signal fluctuates, it can be judged whether the current puncture direction is close to the edge of the bone tissue, and then the medical staff can be prompted to calibrate. The electrical signal measurement method is an existing technology and can adopt measurement methods such as patents CN201610791407.X and CN201210135325.1, which will not be described in detail here.

[0029] The electrical signal measuring unit may use detection components such as current sensors and voltage sensors.

[0030] In one embodiment of this solution, a power supply component is further provided inside the handle, and the electrical signal measuring part is powered by the power supply component to ensure that the power supply state of each electrode is stable. The power supply component can be a battery, a dry cell, etc.

[0031] Preferably, the end of the handle 2 facing the needle body 1 has a connecting ring 9, and a clamping ring 10 is rotatably provided on the outer periphery of the needle body 1, and the clamping ring 10 is threadedly matched with the connecting ring 9.

[0032] Specifically, after the connecting rod is inserted into the connecting groove, the clamping ring is rotated and tightened relative to the connecting ring, and then the clamping ring and the connecting ring are tightly connected through threaded engagement, thereby stably controlling the relative position between the needle body and the handle.

[0033] Preferably, a limiting ring 11 is provided along the circumferential direction at one end of the needle body 1 close to the handle 2 , so that the limiting ring 11 limits the clamping ring 10 .

[0034] Specifically, the clamping ring is limited by the limiting ring, so that after the clamping ring and the connecting ring are tightened, the other side of the clamping ring is positioned by the limiting ring, and then the needle body itself is sufficiently stable through the cooperation between the clamping ring and the limiting ring.

[0035] Preferably, the connecting rod 3 has an elliptical structure, so that after the connecting rod is inserted into the connecting groove, the connecting rod is not likely to rotate circumferentially, thereby improving the stability of the needle during puncture.

[0036] Preferably, a hollow groove 12 is opened on the side of the handle 2, and the hollow groove 12 corresponds to the connecting rod 3, so that the connecting rod 3 can display information at the position of the hollow groove 12.

[0037] Specifically, the length, diameter and other size specifications of the needle body can be engraved on the side of the connecting rod. After the connecting rod is inserted into the connecting slot, the above size specification information can be displayed through the hollow slot, so that medical staff can clearly understand the current usage range of the needle body and avoid misoperation.

[0038] Preferably, the handle 2 is provided with an inner arc structure 13 along the circumference.

[0039] Specifically, during puncture, the fingers are positioned around and grip the inner arc structure to improve the stability of the grip on the handle.

[0040] Preferably, the end of the handle 2 away from the needle body 1 has a spherical structure 14 .

[0041] Specifically, while the fingers wrap around and grasp the inner arc structure, the spherical structure is pressed against the center of the palm, so that the axial direction of the handle is controlled by the center of the palm, and the circumferential direction of the handle is controlled by the fingers, so as to improve the puncture stability of the puncture needle.

[0042] Preferably, a display screen 15 is provided on the side of the handle 2 , and the display screen 15 is used to display the detection results of the electrical signal measuring unit.

[0043] Specifically, the detection information of the electrical signal measuring unit is displayed in real time on the display screen, which can effectively remind medical staff whether the current puncture position is accurate.

[0044] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. A medical puncture needle, characterized in that: The invention comprises a needle body (1) and a handle (2) connected to one end of the needle body (1); the needle body (1) has a connecting rod (3) at one end facing the handle (2); a connecting groove (4) matching the connecting rod (3) is provided at the end of the handle (2), so that the connecting rod (3) is plugged into the connecting groove (4); a first electrode (5) and a second electrode (6) are respectively provided on both sides of the puncture end of the needle body (1); a third electrode (7) and a fourth electrode (8) are provided at the end of the connecting rod (3); the first electrode (5) and the third electrode (7) are electrically connected to form a first electrode group, and the second electrode (6) and the fourth electrode (8) are electrically connected to form a second electrode group; an electric signal measuring part is built into the handle (2), so that the first electrode group and the second electrode group are both electrically connected to the electric signal measuring part.

2. The medical puncture needle according to claim 1, characterized in that: One end of the handle (2) facing the needle body (1) is provided with a connecting ring (9); a clamping ring (10) is rotatably provided on the outer periphery of the needle body (1), and the clamping ring (10) and the connecting ring (9) are threadedly matched.

3. The medical puncture needle according to claim 2, characterized in that: A limiting ring (11) is provided along the circumferential direction at one end of the needle body (1) close to the handle (2), so that the limiting ring (11) limits the position of the clamping ring (10).

4. The medical puncture needle according to claim 1, characterized in that: The connecting rod (3) has an elliptical structure.

5. The medical puncture needle according to claim 1, characterized in that: A hollow groove (12) is provided on the side of the handle (2), and the hollow groove (12) corresponds to the connecting rod (3), so that the connecting rod (3) can display information at the position of the hollow groove (12).

6. The medical puncture needle according to claim 1, characterized in that: The handle (2) is provided with an inner arc structure (13) along the circumference.

7. The medical puncture needle according to claim 1, characterized in that: An end of the handle (2) away from the needle body (1) has a spherical structure (14).

8. The medical puncture needle according to claim 1, characterized in that: A display screen (15) is provided on the side of the handle (2), and the display screen (15) is used to display the detection result of the electric signal measuring part.

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