CN217827931U - RCD coaxial puncture biopsy guide needle - Google Patents
RCD coaxial puncture biopsy guide needle Download PDFInfo
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- CN217827931U CN217827931U CN202220253911.5U CN202220253911U CN217827931U CN 217827931 U CN217827931 U CN 217827931U CN 202220253911 U CN202220253911 U CN 202220253911U CN 217827931 U CN217827931 U CN 217827931U
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- needle
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Abstract
The utility model provides a RCD coaxial puncture biopsy guide needle, which comprises a needle handle (1), wherein one end of the needle handle (1) is provided with a guide needle tube (2) with scales, a needle core (7) is inserted in the guide needle tube (2), one end of the needle core (7) is fixedly connected with a needle seat (4), the needle seat (4) is mutually matched with the needle handle (1), and an installation sleeve (402) for fixing the needle core (7) is arranged in the needle seat (4); one end of the needle handle (1) is connected with a hose (5), and one end of the hose (5) is connected with a medical tube plug valve (6); a silica gel flap (8) is arranged in the needle handle (1); the bottom of the guide needle tube (2) is provided with a needle head (201) with a triangular inclined surface, and the needle core (7) can penetrate out of the head end of the guide needle tube (2). The utility model discloses a puncture biopsy guide needle can guarantee that the guide needle is in airtight state constantly, and body fluid outflow or gaseous internal flow when avoiding extracting nook closing member (7) to can realize taking out bag/pus or pouring into the liquid medicine at any time.
Description
Technical Field
The utility model relates to the technical field of medical equipment, belong to advanced treatment facility and service in the medical engineering industry, simultaneously, also relate to medical inspection and inspection instrument field. In particular to an RCD coaxial puncture biopsy guide needle.
Background
The needle biopsy is an operation that a lesion site is aspirated/cut by percutaneous aspiration under the guidance of a medical imaging device, and a small amount of body fluid/cells/tissues are obtained to perform pathological examination and diagnosis.
Value of needle biopsy:
(1) Is an important clue for clinical treatment and has diagnostic and differential diagnostic values. For example, if a tumor is found, it should be excised, and if inflammation is caused, it will be antiphlogistic, etc. Provides the most important information for the selection of the treatment scheme and the operation mode of the patient and the evaluation and follow-up during and after the treatment.
(2) Has therapeutic value, such as hydrothorax, ascites, pus, and cystic fluid suction therapy. However, the coaxial puncture can not only perform biopsy and liquid extraction, but also inject medicine for treatment.
(3) The effect of puncture and biopsy was observed.
The puncture biopsy should avoid the complications of puncture and biopsy. Such as bleeding, which occurs when a blood vessel is punctured; bile leakage; (ii) infection; tumor implantation and the like, although the incidence of diseases is low, only 0.04% -0.05%, still arouses our attention.
The consumable "needle biopsy needle (automatic/semi-automatic)" for intervention is widely applied to clinical medical activities, but the conventional needle biopsy guide needle has disadvantages, namely: the guide needle enters the position near/inside the pathological change tissue, the guide needle tube is in a state of being communicated/opened with the outside after exiting the needle core, and at the moment, sac fluid/pus/blood of the pathological change tissue flows outwards along the tail end of the guide needle tube or air flows inwards along the tail end of the needle, so that local pollution, unnecessary blood loss or pneumothorax, air embolism and the like are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect at least partly, providing a novel RCD coaxial puncture biopsy guide needle.
An object of the utility model is to provide a coaxial puncture biopsy guide needle of RCD can reduce puncture biopsy complication, complication.
The utility model aims at providing a coaxial puncture biopsy guide needle of RCD makes the guide needle be in airtight state constantly when the operation.
An object of the utility model is to provide a coaxial puncture biopsy guide needle of RCD reduces rocking of guide needle when the operation, alleviates the painful sense of patient.
In order to achieve one of the above purposes, the technical solution of the present invention is as follows:
the RCD coaxial puncture biopsy guide needle comprises a hollow needle handle, wherein a guide needle tube coaxially arranged with the needle handle is arranged at one end of the needle handle, a needle core is inserted into the guide needle tube, one end of the needle core is fixedly connected to a needle seat, the needle seat is matched with the needle handle, and a mounting sleeve for fixing the needle core is arranged in the needle seat.
One end of the needle handle is connected with a hose, and one end of the hose is connected with a medical tube plug valve.
A silica gel flap is arranged in the needle handle.
The bottom of the guide needle tube is provided with a double-bevel needle head, and the needle core can penetrate out of the needle head.
Preferably, the two opposite sides of the outer side of the needle handle are provided with anti-slip strips.
Preferably, the outer side of the guide needle tube is sleeved with a spring clip.
Preferably, one side of the top end of the needle handle is provided with a positioning groove, and one side of the bottom of the needle seat is provided with a positioning convex seat;
when the needle core is inserted into the guide needle tube, the positioning convex seat is inserted into the positioning groove.
Preferably, the top end of the needle handle is provided with a guide opening, and the inner diameter of the guide opening is larger than the outer diameter of the mounting sleeve.
Preferably, the bottom of the mounting sleeve is provided with an inverted conical head.
Preferably, the medical tube plug valve is a three-way valve, the medical tube plug valve has two taps, and the medical tube plug valve further has a switch shifting piece, and the three-way valve is controlled through the switch shifting piece.
Preferably, a through hole is formed in the middle of the silica gel flap, a tapered groove is formed in the top end of the silica gel flap, the inner diameter of the through hole is smaller than the outer diameter of the needle core, and the silica gel flap is used as a one-way hemostatic valve.
Preferably, the length of the guide needle tube is 100-200mm, and the length of the hose is 15-20mm.
Preferably, the hose is connected with the needle handle through a connecting joint arranged on the needle handle;
the extension direction of the connecting joint is perpendicular to the longitudinal extension direction of the guide needle tube, or the connecting joint extends from the needle handle to the front side of the guide needle, or the connecting joint extends from the needle handle to the back side of the guide needle.
The utility model discloses beneficial effect:
1. the guiding needle head part is provided with a silica gel flap which can be used as a hemostatic valve, so that the guiding needle can be ensured to be in a closed state at any time during the operation;
2. the guide needle head is connected with a medical tube plug valve through a hose, so that the sac/pus can be drawn out or liquid medicine can be injected at any time;
3. the guide needle head is connected with a medical tube plug valve through a hose, so that the movement of the guide needle can be reduced, and the pain of a patient can be relieved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the needle core with the component pulled out;
fig. 3 is a schematic structural view of the needle core connecting assembly of the present invention;
FIG. 4 is a schematic view of a silicone flap component of the present invention;
FIG. 5 is a schematic view of a spring clip component according to the present invention;
FIG. 6 is a schematic cross-sectional view of the needle shaft of the present invention;
FIG. 7 is a schematic view of a vertical installation of the component hose according to an embodiment of the present invention;
FIG. 8 is a schematic structural view of an embodiment of the present invention in which the component hose is installed obliquely downward;
fig. 9 is a schematic structural diagram of an embodiment of the present invention in which the component software is installed obliquely upward.
Detailed Description
Exemplary embodiments of the present invention will be described in detail below with reference to the attached drawings, wherein like or similar reference numerals denote like or similar elements. Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.
As shown in fig. 1-2, comprising a hollow needle handle 1, the main body of the needle handle 1 is mainly cylindrical or square column, and in order to increase the friction force of the needle handle 1, a skid-proof strip 102 is arranged on the outer side wall of the needle handle 1. In fig. 1, the main body of the needle shaft 1 is: on the basis of the square column shape, the side surfaces of the four square column shapes are inwards concave to form four concave parts, and the shape is beneficial to holding by hands. The cleats 102 are disposed on a pair of opposing two recesses, or alternatively, the cleats 102 are disposed on four recesses.
The bottom end of the needle handle 1 is provided with a guide needle tube 2 which is coaxially arranged with the needle handle 1. At the top end of the needle shaft 1 is provided a protruding cylinder, on top of which a guide opening 101 is provided. An extension of a four-lobed branch is formed at one end of the needle handle 1 where the guide needle tube 2 is provided, and the guide needle tube 2 is provided at the center of the four-lobed branch.
As shown in fig. 6, the hollow shape of the inside of the needle handle 1 is conical at the bottom and cylindrical at the top. A silica gel flap 8 is arranged in the needle handle 1. The silicone gel flap 8 is disposed at the cylindrical to conical aperture change interface.
As shown in fig. 1 and 3, a stylet 7 is inserted into the guiding needle tube 2, one end of the stylet 7 is fixedly connected to the needle base 4, the needle base 4 is matched with the needle handle 1, and a mounting sleeve 402 for fixing the stylet 7 is arranged in the needle base 4. The mounting sleeve 402 is fixed in the middle of the inside of the needle seat 4 of the rectangular frame, the mounting sleeve 402 is coaxially connected with the needle core 7, and after the needle core 7 is inserted into the guide needle tube 2, the needle core 7 and the guide needle tube 2 are also coaxial.
One end of the needle handle 1 is connected with a hose 5, and one end of the hose 5 is connected with a medical tube plug valve 6. The hose 5 may be perpendicular to the central axis of the needle shaft 1 as shown in figure 7. The hose 5 is connected obliquely downwards relative to the central axis of the needle shaft 1, as shown in fig. 8. The hose 5 is connected obliquely upward with respect to the central axis of the needle shaft 1, as shown in fig. 9. Three connecting directions are convenient for the puncture biopsy of different parts. Specifically, the hose 5 is connected with the needle handle 1 through a connecting joint arranged on the needle handle 1; the connection joint may extend in a direction perpendicular to the longitudinal direction of the guide needle tube 2, or may extend from the needle shaft 1 toward the front side of the guide needle, or may extend from the needle shaft 1 toward the rear side of the guide needle.
As shown in the enlarged view of the needle 201 in fig. 1-2, it can be seen that the distal end of the guiding needle tube 2 is provided with a straight transverse structure, and the needle core 7 can penetrate the needle 201 with a triangular bevel.
Wherein, the outer side of the guide needle tube 2 is sleeved with a spring clamp 3. The puncture depth of the needle tube 2 is fixedly guided by the spring clip 3.
As shown in fig. 1-2, a positioning groove 103 is formed on one side of the top end of the needle handle 1, and a positioning boss 401 is formed on one side of the bottom of the needle seat 4. When the needle core 7 is inserted into the guide needle tube 2, the positioning boss 401 is inserted into the positioning groove 103. The needle holder 4 is held by hand to insert the needle core 7 into the needle handle 1 through the guide opening 101 at the top end of the needle handle 1, and when the needle is inserted, the positioning boss 401 is inserted into the same side as the positioning groove 103.
Advantageously, in addition to the positioning and fixing means of the positioning boss 401 and the positioning groove 103, the needle hub 4 and the needle handle 1 are additionally provided with a snap connection mechanism by which the needle hub 4 and the needle handle 1 are fixed and released.
Alternatively, an internal thread is provided on the needle holder 4, an external thread is provided on the guide port 101 of the needle handle 1, and the needle holder 4 and the needle handle 1 are connected together through the internal thread and the external thread.
Wherein, the top of needle handle 1 is equipped with guide opening 101, and the internal diameter of guide opening 101 is greater than the external diameter of installation sleeve 402. The larger bore pilot 101 facilitates insertion of the mounting sleeve 402 from the pilot 101 into the needle shaft 1. Meanwhile, the bottom of the mounting sleeve 402 is provided with an inverted conical head 403, so that the outer diameter of the bottom of the mounting sleeve 402 is smaller, and the stylet 7 can be inserted more conveniently and the mounting sleeve 402 can be inserted more conveniently.
The medical tube plug valve 6 is a three-way valve, the medical tube plug valve 6 is provided with two taps 602, and the taps 602 with different specifications can be more conveniently connected with a connecting tube of a cloth barrel connector. The medical stopcock 6 further has a switch dial 601, and the three-way valve is controlled by the switch dial 601. The connection between the medical tube stopper valve 6 and the hose 5 is also realized by a connection joint, specifically, the connection joint is arranged on one side of the medical tube stopper valve 6 close to the hose 5, the hose 5 can be inserted into the connection joint, and the hose 5 has the deformation capability, and the hose is in interference fit with the medical tube stopper valve 6, so that the connection tightness of the two can be maintained.
As shown in fig. 4 and 6, the silica gel flap 8 is cylindrical, a through hole is formed in the middle of the silica gel flap 8, a tapered groove is formed in the top end of the silica gel flap 8, and the inner diameter of the through hole is smaller than the outer diameter of the needle core 7. The silica gel flap 8 can be put in from the top end of the needle handle 1, or can be firstly sleeved on the needle core 7, and the silica gel flap 8 is put in place by the way when the needle core 7 is inserted into the needle handle 1. Because the aperture of the through hole in the middle of the silica gel flap 8 is smaller than the outer diameter of the needle core 7, the silica gel flap 8 is in interference fit with the needle core 7, the connecting position of the needle core 7 and the silica gel flap 8 is sealed by the silica gel material, and the silica gel flap 8 plays a role of a one-way hemostatic valve.
Wherein, the length of the guide needle tube 2 is 100-200mm, the length of the hose 5 is 15-20mm, the thickness of the guide needle tube 2 is 17G, and the thickness of the needle core 7 is 18G. The guide needle tube 2 and the needle core 7 have lengths such that the distal end of the needle core 7 slightly protrudes from the distal end of the guide needle tube 2 when the positioning boss 401 is inserted into the positioning groove 103.
When in use, the needle core 7 is inserted into one section from one end of the silica gel flap 8 with the conical groove, then the needle core 7 is inserted into the top end of the needle handle 1, and the needle core 7 can not be inserted into the bottom of the guide needle tube 2 at one time.
Then, the guide needle is inserted into the focus position with the help of the imaging device. The guide needle tube 2 is then fixed to the guide needle positioning mechanism by means of the spring clip 3.
The needle core 7 protrudes out of the needle head 201 part at the far end of the guide needle tube 2, the needle core 7 is contacted with a focus, focus tissues are grabbed through the needle core 7, after the needle core 7 is pulled out, the focus tissues grabbed by the needle core 7 are transferred into a chemical examination tube, and then the examination can be carried out.
And because the silica gel flap 8 plays a role of a one-way hemostatic valve, pus or blood coming out of a human body cannot flow out of the top end of the needle handle 1. The three-way valve is connected with a liquid suction device, the switch plectrum 601 is rotated to lead one end communicated with the liquid suction device to be conducted, pus or blood generated in the biopsy process is sucked away through the liquid suction device and cannot flow to the body of a patient, and because the silica gel valve is in interference fit with the needle core, the silica gel material seals the joint of the needle core and the silica gel valve, the cleaning process is avoided. Meanwhile, the medicine can be directly taken after pus is pumped out without being connected with the medicine inlet pipe again. The shaking of the guide needle tube 2 is reduced, and the pain of the patient is relieved.
The utility model discloses beneficial effect:
1. the guiding needle head part is provided with a silica gel flap which can be used as a hemostatic valve, so that the guiding needle can be ensured to be in a closed state at any time during the operation;
2. the guide needle head is connected with a medical tube plug valve through a hose, so that the sac/pus can be drawn out or liquid medicine can be injected at any time;
3. the guide needle head is connected with a medical tube plug valve through a hose, so that the guide needle can be prevented from moving due to the fact that a liquid pumping/sealing device is additionally connected in the operation, and pain of a patient is relieved.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention.
List of reference numbers:
1. a needle handle;
101. a guide port;
102. anti-slip strips;
103. positioning a groove;
2. a guide needle tube;
201. a needle head;
3. a spring clip;
4. a needle seat;
401. positioning the convex base;
402. installing a sleeve;
403. a conical head;
5. a hose;
6. a medical tube plug valve;
601. a switch paddle;
602. a tap;
7. a needle core;
8. a silica gel flap.
Claims (10)
1. The utility model provides a coaxial puncture biopsy guide needle of RCD, includes handle of needle (1) of cavity form, the one end of handle of needle (1) have with the coaxial guide needle tubing (2) that set up of handle of needle (1), it has nook closing member (7) to peg graft in guide needle tubing (2), the one end fixed connection of nook closing member (7) is in needle file (4), its characterized in that:
the needle seat (4) is matched with the needle handle (1), and a mounting sleeve (402) for fixing the needle core (7) is arranged in the needle seat (4);
one end of the needle handle (1) is connected with a hose (5), and one end of the hose (5) is connected with a medical tube plug valve (6);
a silica gel flap (8) is arranged in the needle handle (1);
the bottom of guide needle tubing (2) is equipped with syringe needle (201) of double inclined plane, nook closing member (7) can wear out syringe needle (201).
2. The RCD coaxial aspiration biopsy guide needle according to claim 1, wherein the needle handle (1) is provided with anti-slip strips (102) on two opposite sides of the outside.
3. The RCD coaxial aspiration biopsy guide needle according to claim 1, characterized in that the outer side of the guide needle tube (2) is sleeved with a spring clip (3).
4. The RCD coaxial puncture biopsy guide needle according to claim 1, characterized in that a positioning groove (103) is arranged on one side of the top end of the needle handle (1), and a positioning convex seat (401) is arranged on one side of the bottom of the needle seat (4);
when the needle core (7) is inserted into the guide needle tube (2), the positioning convex seat (401) is inserted into the positioning groove (103).
5. The RCD coaxial biopsy guide needle according to claim 1, wherein the needle handle (1) is provided with a guide opening (101) at its top end, the guide opening (101) having an inner diameter larger than the outer diameter of the mounting sleeve (402).
6. The RCD coaxial biopsy guide needle according to claim 5, wherein the bottom of the mounting sleeve (402) is provided with an inverted conical head (403).
7. The RCD coaxial aspiration biopsy guide needle according to claim 1, wherein the medical tube plug valve (6) is a three-way valve, the medical tube plug valve (6) has two taps (602), the medical tube plug valve (6) further has a switch dial (601), and the three-way valve is controlled by the switch dial (601).
8. The RCD coaxial aspiration biopsy guide needle according to claim 1, characterized in that a through hole is arranged in the middle of the silica gel flap (8), a conical groove is arranged at the top end of the silica gel flap (8), the inner diameter of the through hole is smaller than the outer diameter of the needle core (7), and the silica gel flap (8) is used as a one-way hemostatic valve.
9. The RCD coaxial aspiration biopsy guide needle according to claim 1, wherein the guide needle tube (2) is 100-200mm long and the hose (5) is 15-20mm long.
10. The RCD coaxial needle biopsy guide needle of any one of claims 1-9, wherein:
the hose (5) is connected with the needle handle (1) through a connecting joint arranged on the needle handle (1);
the extending direction of the connecting joint is vertical to the longitudinal extending direction of the guiding needle tube (2), or the connecting joint extends from the needle handle (1) to the front side of the guiding needle, or the connecting joint extends from the needle handle (1) to the rear side of the guiding needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220253911.5U CN217827931U (en) | 2022-02-07 | 2022-02-07 | RCD coaxial puncture biopsy guide needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220253911.5U CN217827931U (en) | 2022-02-07 | 2022-02-07 | RCD coaxial puncture biopsy guide needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217827931U true CN217827931U (en) | 2022-11-18 |
Family
ID=84009937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220253911.5U Active CN217827931U (en) | 2022-02-07 | 2022-02-07 | RCD coaxial puncture biopsy guide needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217827931U (en) |
-
2022
- 2022-02-07 CN CN202220253911.5U patent/CN217827931U/en active Active
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