CN213489164U - Novel puncture needle for nephrology department - Google Patents

Abstract

The utility model relates to a novel puncture needle for nephrology department, which at least comprises a first tube, a second tube and a holding device, wherein the second tube is detachably connected with the holding device; the length of the first pipe is larger than that of the second pipe, so that at least one part of the first pipe can be contained in the second pipe in a mode of penetrating through the holding device and extend out of the second pipe. Thus, with the second tube positioned at the desired location, multiple punctures or tissue extractions at the desired location can be achieved by merely replacing the first tube to achieve the best results of the medical procedure.

Description

Novel puncture needle for nephrology department

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a novel puncture needle for nephrology dept.

Background

The kidney puncture biopsy is an important method for diagnosing kidney diseases, and at present, when a kidney puncture needle is clinically applied to perform the kidney puncture biopsy, two persons are required to operate, and negative pressure is sucked by an assistant. When in puncture, the puncture needle is punctured, the depth of the puncture needle needs to be repeatedly measured by a ruler, which brings inconvenience to the operation and influences the puncture quality. After the puncture depth is measured during puncture, a finger needs to be fixed on the puncture needle to determine the puncture needle insertion depth, but the finger is easy to move in the operation process, so that the accuracy of the puncture depth is influenced. In addition, the projection of the common puncture needle under ultrasound is not clear, the common puncture needle is difficult to distinguish from the kidney and the surrounding tissues, and the puncture part is determined inaccurately, thus increasing the working difficulty for medical workers.

For example, chinese patent publication No. CN202908750U discloses a novel puncture needle for nephrology department, which comprises a needle body and a needle point, a transparent blind tube is arranged outside the needle body, an annular air chamber is arranged at a position close to the needle point on the needle body, a fixing sleeve is arranged outside the transparent blind tube, a fixing screw is arranged on the fixing sleeve, a needle handle is arranged at the end of the needle body, a groove is arranged on the needle handle, and a rubber thread is arranged on the outer surface of the needle handle. The puncture depth can be effectively controlled, the needle body, the kidney and surrounding tissues can be clearly distinguished under the ultrasonic condition, the puncture positioning is accurate, and the working difficulty of medical staff is reduced.

However, if the penetration at the desired location or the tissue extraction is not successful after the device has penetrated the body, the entire device needs to be re-penetrated into the body, which may increase the risk of complications during tissue penetration and may cause unnecessary damage to the subject.

Chinese patent (No. CN206228351U) discloses a pjncture needle, including needle file, needle tubing, needle cap and needle cap cover, the needle file parcel is in the first end of needle tubing, the second end of needle tubing has conical puncture head, the needle tubing lateral wall has the through-hole, the through-hole edge has the radius angle, the needle file has first location cylinder, second location cylinder and the handle of keeping away from puncture head in proper order, first location cylinder, second location cylinder and handle connect gradually and radial width increases in proper order, first location cylinder and needle cap lock, needle cap cover and second location cylinder lock, the handle top has the first end intercommunication of circular through-hole and needle tubing, at collection or blood transfusion in-process, alleviates the painful pipe of being punctured the organism to make things convenient for staff's use.

Chinese patent (No. CN208710022U) discloses a cardiovascular puncture needle, including pjncture needle main part, extraction syringe needle subassembly, connecting pipe, installation pipe, the pjncture needle main part includes puncture syringe needle, branch pipe, needle tubing connector, interior needle core pipe connector, branch mouth, the one end of needle tubing is provided with the puncture syringe needle, and the other end of needle tubing is provided with the needle tubing connector, the one end circumference surface that the needle tubing is close to the needle tubing connector is provided with the branch pipe, the one end that the needle tubing was kept away from to the branch pipe is provided with a mouth of pipe, this utility model discloses a design extraction syringe needle subassembly, extraction syringe needle subassembly comprises extraction syringe needle, thick pipe and tubule, and the extraction syringe needle sets up to the button head, avoids the extraction syringe needle to stab internal tissue, has designed the through-hole at the.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a novel puncture needle for nephrology department, which at least comprises a first tube, a second tube and a holding device, and is characterized in that the second tube is detachably connected with the holding device; the length of the first pipe is larger than that of the second pipe, so that at least one part of the first pipe can be contained in the second pipe in a mode of penetrating through the holding device and extend out of the second pipe.

According to a preferred embodiment, the second tube comprises a second lumen and a second connection part at the proximal end of the second puncture element, wherein the second connection part comprises a second connection part communicating with the second lumen, the second lumen extending through the second puncture element such that the first puncture element of the first tube can be inserted into the second tube through the second connection part.

According to a preferred embodiment, the shape of the second connecting part is adapted to the shape of the third connecting part of the holding device, so that the second connecting part is detachably connected to the third connecting part.

According to a preferred embodiment, the first tube comprises a first tip located distally of the first piercing element, wherein the first tip comprises a bevel and the diameter of the first piercing element is smaller than the diameter of the second piercing element to enable insertion of the first piercing element into the second tube.

According to a preferred embodiment, the first connection portion of the first tube comprises a distally facing first connection part comprising a female threaded element complementary to the threaded male element of the fourth connection part of the gripping means, so that the first tube can be detachably connected with the gripping means.

According to a preferred embodiment, the holding device comprises a holding rod, a rotating mechanism and a bearing, wherein the holding rod is fixedly connected with the inner ring of the bearing, and the inner wall of the rotating mechanism is fixedly connected with the outer ring of the bearing, so that the rotating mechanism is rotatably connected with the holding rod in a manner of rotating coaxially with the holding rod.

According to a preferred embodiment, the swivel mechanism is fixedly connected to the fourth connection part, so that the swivel mechanism can be rotationally connected to the first pipe when the first pipe is connected to the fourth connection part, when subjected to a torque.

According to a preferred embodiment, the holding device comprises a cavity extending through the fourth coupling part, the rotation mechanism, the grip lever and the third coupling part, such that the cavity can accommodate a portion of the first piercing element.

According to a preferred embodiment, the second connecting part comprises a male part which is fixedly connected to the second piercing element.

According to a preferred embodiment, the outer surface of the grip is provided with anti-slip strips.

The utility model provides a novel puncture needle for nephrology dept sets up through the combination of first pipe with the second pipe, and when the second pipe location expectation position in organizing, can attach suction device through changing first pipe or holding the device, realize effective puncture or draw.

Drawings

FIG. 1 is a schematic view of the overall structure of a novel puncture needle for nephrology department provided by the present invention;

FIG. 2 is a schematic view of a first tube structure of the novel puncture needle for nephrology department provided by the present invention;

FIG. 3 is an exploded view of the second tube and the holding device of the novel puncture needle for nephrology department provided by the present invention;

FIG. 4 is an axial sectional view of a holding device of the novel puncture needle for nephrology department provided by the utility model;

FIG. 5 is a cross-sectional view perpendicular to the axial direction of the novel holding device for the puncture needle for nephrology department provided by the utility model;

FIG. 6 is a schematic view showing the usage state of the novel puncture needle for nephrology department provided by the present invention;

FIG. 7 is a schematic view of the novel puncture needle for nephrology department drawing out the first tube when in use; and

fig. 8 is a schematic view of a novel puncture needle attached suction device for nephrology department.

List of reference numerals

10: first pipe 11: first puncture element 12: first lumen

13: first tip 14: first connection portion 14 a: first connecting part

20: second tube 21: second penetrating member 22: second lumen

23: second tip 24: second connection portion 24 a: convex part

24 b: second connecting member 30: the holding device 31: holding rod

32: the rotation mechanism 33: first end portion 33 a: third connecting part

34: second end portion 34 a: fourth connecting member 35: hollow cavity

36: bearing 40: suction device

Detailed Description

The following detailed description is made with reference to fig. 1 to 8.

In the description of the present invention, the terms "first", "second", "third" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first," "second," "third," and so forth may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "inner", etc. indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present invention, the term "detachably" is one of bonding, key connection, screw connection, pin connection, snap connection, hinge connection, clearance fit, or transition fit. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

The present embodiment provides a novel puncture needle for nephrology department, which comprises a first tube 10 and a second tube 20. The length of the first tube 10 is longer than the length of the second tube 20. Such that at least a portion of the first tube 10 is receivable through the grip arrangement 30 inside the second tube 20 and extends out of the second tube 20. Wherein at least a portion comprises the piercing element 21 portion of the first tube 10. The holding device 30 is connected to the second tube 20. The second tube 20 comprises a second piercing element 21 and a second connecting part 24. As shown in fig. 1 and 2, the second piercing element 21 of the second tube 20 is tapered at its distal end to form a second tip 23. The second tip 23 may be beveled.

Preferably, as shown in fig. 1 and 3, the second connecting portion 24 of the second tube 20 is located at the proximal end of the second puncture element 21. The second connection portion 24 includes a male member 24a, which male member 24a facilitates grasping when removing the first tube 10 through the second lumen 22. The male member 24a may have any shape that is convenient for gripping. For example, the shape may be as shown in FIG. 1, cylindrical or any other shape that is convenient for handling. The male member 24a may also be configured to rest against a tissue surface (e.g., the subject's skin, etc.) for positioning when the second piercing element 21 has been fully inserted into the subject's body or organ. At the proximal end of the second tube 20, the second connection portion 24 further comprises a second connection part 24 b. The second connecting part 24b communicates with the second lumen 22. The second lumen 22 extends through the second puncture element 21 of the second tube 20 to enable the first puncture element 11 of the first tube 10 to be inserted into the second lumen 22. The second coupling part 24b may be constructed in a structure to be detachably coupled with the third coupling part 33a of the grip device 30. For example, the second connection part 24b may be configured in the form of a socket having a shape complementary to the shape of the third connection part 33a of the holding device 30.

Preferably, as shown in FIG. 2, the first tube 10 includes a first tip 13 at the distal end of the first puncture element 11, and a first connection 14 at the proximal end of the first puncture element 11. The first tip 13 includes a bevel. The diameter of the first piercing element 11 is smaller than the diameter of the second piercing element 21. To facilitate introduction of the first puncture element 11 into the second lumen 22 of the second tube 20. Preferably, the first tube 10 comprises a first lumen 12 extending through the first puncture element 11 and the first connection 14. The first lumen 12 is used to contain tissue, interstitial fluid, or other extraction targets when a tissue sample is to be extracted.

Preferably, as shown in fig. 6, the first tube 10 and the second tube are pierced into the tissue of the body of the subject, and the first piercing element 11 of the first tube 10 has a length such that it can pass completely through the second lumen 22 of the second tube 20 and the holding means 30. The second tube 20 is connected to the holding device 30. When the second tube 20, the holding means 30 and the first tube 10 are assembled, as shown in fig. 1, the first piercing element 11 of the first tube 10 should have a length such that the first tip 13 can protrude beyond the second tip 23 of the second piercing element 21 of the second tube 20. The distance by which the first tip 13 of the first puncture element 11 protrudes beyond the second tip 23 of the second puncture element 21 prevents the bevel at the first tip 13 of the first puncture element 11 from overlapping the second tip 23 of the second puncture element 21.

Preferably, the first connection portion 14 of the first tube 10 as shown in fig. 1 and 2 comprises a distally facing first connection part 14 a. The holding device 30 comprises a first end 33 and a second end 34. The first end portion 33 includes a third connecting member 33 a. The second end 34 includes a fourth connecting member 34 a. The first connecting part 14a enables the first tube 10 to be connected to the fourth connecting part 34a of the holding device 30. The distally facing first coupling part 14a of the first coupling part 14 of the first tube 10 may comprise a female threaded element complementary to a threaded male element of the fourth coupling part 34a of the holding device 30. This makes it possible to detachably connect the first tube 10 to the holding device 30.

Preferably, as shown in fig. 4 and 5, the holding device 30 includes a grip 31 for holding and a rotatable mechanism 32 for operating the movable hand. The fourth connecting member 34a is fixedly connected to the rotating mechanism 32. So that the fourth connecting part 34a can be rotated when the rotating mechanism 32 is rotated by an external force. The cavity 35 extends through the fourth coupling part 34a, the rotation mechanism 32, the grip lever 31 and the third coupling part 33a, so that the cavity 35 can receive a portion of the first piercing element 11 of the first tube 10, such that the first piercing element of the first tube 11 can extend through the holding device 30.

Preferably, as shown in fig. 4 and 5, the grip 31 is of a cylindrical structure and the rotating mechanism 32 is of a cylindrical sleeve structure. The holding rod 31 is fixedly connected with the inner ring of the bearing 36 and the rotating mechanism 32 is rotatably connected through the bearing 36. More specifically, the grip 31 is fixedly connected to the inner ring of the bearing 36, and the inner wall of the rotating mechanism 32 is fixedly connected to the outer ring of the bearing 36, so that the rotating mechanism 32 is rotatably connected to the grip 31 in a manner of rotating coaxially with the grip 31. When the holding device 30 is held stationary, the first piercing element 11 can be rotated by the braking rotation mechanism 32. Pushing the holding device 30 in the axial direction moves the puncturing device. Preferably, the outer surface of the grip 31 is provided with an anti-slip strip.

Preferably, when the second tube 20 and the first tube 10 are assembled with the holding device 30, the resulting puncturing device 1 can be used for taking samples from a subject or removing tissue from organ tissue during a medical procedure. Fig. 6 and 7 show the operation of such a puncturing device. The second piercing element 21 of the second tube 20 and the first tip 13 of the first piercing element 11 of the first tube 10 can penetrate the tissue to be tested. The second piercing element 21 and the first piercing element 11 can be introduced into the tissue by perforating the tissue by applying pressure to a distal end of the holding device 30. This force may be accompanied by rotation of the first puncture element 11 by the holding device 30, thereby further introducing the second puncture element 21 and the first puncture element 11 into the subject's body. Once the distal end of the second puncture element 21 of the second tube 20 has penetrated the desired location in the subject, the first tube 10 may be detached from the holding device 30 and the second tube 20. Specifically, the first connection part 14b of the first connection part 14 of the first tube 10 may be separated from the fourth connection part 34a of the grip device 30 so as to be withdrawn from the second lumen 22 of the second tube 20 and the inner cavity 35 of the grip device 30.

Example 2

Preferably, as shown in fig. 8, a syringe or another suction device 40 may be connected to the fourth connecting part 34a of the holding device 30 and used for sucking material (e.g., a specimen, tissue, or tissue fluid, etc.) through the second piercing member 21 of the second tube 20. If the desired material is drawn by the suction device 40, suction can continue. If the desired material is not taken, the suction device 40 can be removed from the holding device 30 and the first tube 10 can be replaced for the holding device 30. The process of drawing out the first tube 10, the process of sucking using the sucking device 40, and the process of replacing the first tube 10 may be combined or repeated according to actual use needs and actual situations of sampling effects.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims (9)

1. A novel puncture needle for nephrology department at least comprises a first tube (10), a second tube (20) and a holding device (30), and is characterized in that the second tube (20) is detachably connected with the holding device (30);

wherein the length of the first tube (10) is greater than the length of the second tube (20) such that at least a portion of the first tube (10) is receivable through the gripping means (30) inside the second tube (20) and extends out of the second tube (20);

the second tube (20) comprising a second lumen (22) and a second connection (24) at a proximal end of a second piercing element (21), the second piercing element (21) of the second tube (20) being tapered at its distal end to form a second tip (23),

wherein the second connection portion (24) comprises a second connection part (24b), the second connection part (24b) communicating with the second lumen (22), the second lumen (22) passing in an extending manner through the second puncture element (21) so that the first puncture element (11) of the first tube (10) can be inserted into the second tube (20) through the second connection part (24 b).

2. A new nephrology puncture needle according to claim 1, characterized in that the shape of the second connecting part (24b) is matched with the shape of the third connecting part (33a) of the holding device (30),

so that the second coupling part (24b) is detachably coupled to the third coupling part (33 a).

3. A novel nephrology puncture needle according to claim 1 or 2, characterized in that the first tube (10) comprises a first tip (13) at the distal end of the first puncture element (11), wherein the first tip (13) comprises a bevel, the diameter of the first puncture element (11) being smaller than the diameter of the second puncture element (21) to enable the first puncture element (11) to be inserted into the second tube (20).

4. A new nephrology puncture needle according to claim 2, characterized in that the first connection part (14) of the first tube (10) comprises a distally facing first connection part (14a), the first connection part (14a) comprising a female threaded element complementary to a threaded male element of the fourth connection part (34a) of the grip device (30),

so that the first tube (10) can be detachably connected to the holding device (30).

5. A novel nephrology puncture needle according to claim 4, characterized in that the holding device (30) comprises a holding rod (31), a rotating mechanism (32) and a bearing (36),

the holding rod (31) is fixedly connected with the inner ring of the bearing (36), and the inner wall of the rotating mechanism (32) is fixedly connected with the outer ring of the bearing (36), so that the rotating mechanism (32) is rotatably connected with the holding rod (31) in a manner of coaxial rotation with the holding rod (31).

6. A novel nephrology puncture needle according to claim 5, characterized in that the rotation mechanism (32) is fixedly connected with the fourth connecting part (34a),

so that the swivel mechanism (32) can be rotationally connected with the first pipe (10) under torque when the first pipe (10) is connected to the fourth connecting part (34 a).

7. A novel nephrology puncture needle according to claim 5, characterized in that the holding device (30) comprises a cavity (35), the cavity (35) extending through the fourth connection part (34a), the rotation mechanism (32), the grip lever (31) and the third connection part (33a) such that the cavity (35) can accommodate a portion of the first puncture element (11).

8. A novel nephrology puncture needle according to claim 1 or 2, characterized in that the second connecting portion comprises a male part (24a), the male part (24a) being fixedly connected with the second puncture element (21).

9. A novel nephrology puncture needle according to claim 5, characterized in that the outer surface of the grip rod (31) is provided with an anti-slip strip.

Images