CN209751177U - Puncture needle - Google Patents
Puncture needle Download PDFInfo
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- CN209751177U CN209751177U CN201920179408.8U CN201920179408U CN209751177U CN 209751177 U CN209751177 U CN 209751177U CN 201920179408 U CN201920179408 U CN 201920179408U CN 209751177 U CN209751177 U CN 209751177U
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Abstract
The utility model discloses a puncture needle relates to medical biopsy sampling device technical field, when having solved the puncture needle that adopts among the prior art and having carried out biopsy puncture operation, leads to the organ or the tissue around the target tissue to receive the damage easily to still take place the technical problem that the tumour shifted along the needle track easily. The puncture needle comprises a needle tube, a propeller, a needle core and a needle head, wherein the needle tube is in threaded connection with the propeller; the needle tube is connected with the needle head; the propeller is movably connected with the needle core; the pusher drives the needle core to advance or retract through rotating fit with the needle tube thread. The utility model discloses a pjncture needle passes through the screw thread rotation of propeller in the needle tubing and drives the nook closing member and go forward or return and contract, makes the arbitrary puncture length of the adjustable nook closing member of pjncture needle, does not receive the restriction of puncture interval length, for the pjncture needle among the prior art, the length of control nook closing member puncture that can be accurate to avoided organ or tissue to receive the damage, reduced the probability that the tumour takes place to shift along the needle track.
Description
Technical Field
The utility model relates to a medical biopsy sampling device technical field particularly, indicates a pjncture needle.
Background
Biopsy puncture surgery is an important measure and means for clinical diagnosis of tumors, and a puncture needle can be used for puncturing organs or tissues, and suspicious tissues are obtained through the biopsy puncture needle to be pathologically characterized, so that a further accurate treatment scheme is provided. Although a certain trauma is brought to a patient in the puncture process, the puncture needle is the best method for tumor characterization, and generally, the puncture needle is commonly used for human organs or tissue parts such as prostate, chest cavity, bladder and the like.
The sensitivity of the puncture needle can not be adjusted by the puncture needle which is clinically common in the prior art. For example, a common puncture needle is a pusher-type puncture needle, and the length adjustment basic unit of the puncture needle is 0.5 to 2 centimeters, namely, the length interval value of each puncture needle puncture is 0.5 to 2 centimeters. The puncture needle has low puncture precision and high operation requirement on medical staff, and when the puncture needle is used for carrying out biopsy puncture operation on organs or tissues with different sizes, the organs or tissues around the target tissue are easily damaged, and the tumor is easily transferred along a needle channel, so that the later accurate treatment of a patient is not facilitated.
Therefore, it is an urgent technical problem to provide a puncture needle capable of finely adjusting the puncture length to avoid the damage of organs or tissues and reduce the probability of tumor metastasis along the needle channel.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to overcome the deficiencies of the prior art, and to provide a puncture needle, which solves the technical problems that when a biopsy puncture operation is performed by using a puncture needle in the prior art, the organ or tissue around the target tissue is easily damaged, and the tumor is easily transferred along the needle channel.
the utility model provides a technical scheme that its technical problem adopted is:
Provides a puncture needle, comprising a needle tube, a pusher, a needle core and a needle head, wherein:
the needle tube is in threaded connection with the propeller;
The needle tube is connected with the needle head;
The propeller is movably connected with the needle core;
The propeller is in rotating fit with the needle tube thread to drive the needle core to advance or retract.
on the basis of the technical scheme, the puncture needle can be further improved as follows.
furthermore, a first ejection device and a first fixing device are arranged in the needle tube, the thruster is matched with the first fixing device to pre-press the needle core through the first ejection device, and the needle core is ejected forwards when the first fixing device is free from constraint.
further, the first ejection device comprises a conversion plug and a first spring, the conversion plug is connected with the stylet, the first spring is installed between the propeller and the conversion plug, and the first fixing device restrains the conversion plug.
Furthermore, the first fixing device comprises a key and a spring, the key is hinged to the needle tube, the spring is connected between the key and the needle tube, and the key is connected with a restraining piece for restraining the conversion plug.
Further, the needle tube comprises an outer tube and an inner tube, the inner tube is sleeved in the outer tube, a second ejection device and a second fixing device are arranged between the outer tube and the inner tube, the outer tube is matched with the second fixing device to pre-press the inner tube through the second ejection device, and when the second fixing device releases restraint, the needle core retracts backwards.
Further, the second ejection device comprises a second spring, the second spring is installed between the outer tube and the inner tube, and the second fixing device restrains the inner tube.
Further, the second fixing device comprises a key b and a spring b, the key b is hinged to the outer pipe, the spring b is connected between the key b and the outer pipe, and the key b is connected with a restraining cover for restraining the inner pipe.
Further, the outer tube is provided with a concave step and a concave groove, and the inner tube is provided with a convex step corresponding to the concave step and a convex groove corresponding to the concave groove respectively.
Further, the outer tube still is provided with the pintle, the syringe needle is connected with the needle cap, the syringe needle passes through the needle cap with the demountable connection of pintle is installed on the outer tube.
Furthermore, the needle core and the needle head are provided with an oblique notch with a matched shape, and the needle core is also provided with a sampling cavity for sampling.
Compared with the prior art, the utility model provides a puncture needle has beneficial effect is:
1. the utility model discloses a pjncture needle passes through the screw thread rotation of propeller in the needle tubing and drives the nook closing member and go forward or return and contract, makes the arbitrary puncture length of the adjustable nook closing member of pjncture needle, does not receive the restriction of puncture interval length, for the pjncture needle among the prior art, the length of control nook closing member puncture that can be accurate to avoided organ or tissue to receive the damage, reduced the probability that the tumour takes place to shift along the needle track, improved the suitability of pjncture needle, very big reduction medical personnel's the operation degree of difficulty.
2. The utility model discloses a first jettison device and first fixing device's cooperation can predetermine the length that the nook closing member popped out, makes the arrival focus position that the pjncture needle can be accurate take a sample, and whole time of launching is extremely short to be favorable to alleviateing patient's misery.
3. The utility model discloses a second jettison device and second fixing device's cooperation can make the inner tube pop out the outer tube to in making the nook closing member withdrawal syringe needle, guaranteed the seal of the sample of getting, whole launch time is also extremely short, further is favorable to alleviateing patient's misery.
drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the entire structure of the puncture needle of the present invention;
fig. 2 is a partially enlarged view of a first fixing device of the present invention;
Fig. 3 is a partially enlarged view of a second fixing device of the present invention;
FIG. 4 is an enlarged view of a portion of the needle core and needle of the present invention;
Fig. 5 is a partial enlarged view of the inner tube of the present invention;
Fig. 6 is a schematic view showing the state of use of the puncture needle of the present invention.
In the figure:
1-an outer tube; 2, an inner tube; 21-convex step; 22-raised line grooves; 3, a propeller; 4-a confinement cap; 5, a conversion plug; 6-a first spring; 7-a second spring; 8-a second fixing device; 81-b keys; 82-b spring; 9 — a first fixing device; 91-a key; 92-a spring; 93-a restraint; 10-a needle core; 11-a needle head; 12-pintle; 13-needle cap; 14-sampling lumen.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are merely exemplary of the invention and are not intended to be exhaustive. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
example 1:
A puncture needle comprises a needle tube, a propeller 3, a needle core 10 and a needle head 11, wherein the needle tube is provided with an internal thread, the propeller 3 is provided with an external thread matched with the internal thread, and the propeller 3 can rotate in the internal thread of the needle tube to realize the advancing and retracting functions of the propeller 3, as shown in figure 1. The needle tube is connected with a needle 11, the needle core 10 is sleeved in the needle 11, and the needle core 10 can freely slide relative to the needle 11. The pusher 3 is connected to the core 10 and the pusher 3 is free to rotate relative to the core 10, e.g. the pusher 3 is connected to the core 10 by a bearing. When the pusher 3 is rotated by the screw thread in the needle tube, the pusher 3 can advance or retract the needle core 10 in the needle 11.
As shown in fig. 6, in the biopsy puncture operation, when the needle 11 reaches the set puncture site A, the focus is located at B, the pusher 3 is rotated to make the needle core 10 reach the focus site B through ultrasonic guidance, and then the sampling of the sample is completed. Whole puncture in-process, the puncture length of nook closing member 10 can be adjusted wantonly, does not receive the restriction of puncture interval length, for the pjncture needle among the prior art, the utility model discloses the length of the puncture of control nook closing member 10 that can be accurate to avoided organ or tissue to receive the damage, reduced the probability that the tumour takes place to shift along the needle track, improved the suitability of pjncture needle, very big reduction medical personnel's the operation degree of difficulty.
Example 2:
Preferably, to better implement the present invention, further optimization is performed on the basis of the above embodiments, and the following arrangement structure is particularly adopted:
As shown in fig. 1 and 2, a first ejection device and a first fixing device 9 are arranged in the needle tube, the first ejection device comprises a conversion plug 5 and a first spring 6, the stylet 10 is mounted on the conversion plug 5, and the first spring 6 is mounted between the pusher 3 and the conversion plug 5. The first fixing device 9 comprises an a button 91 and an a spring 92, the middle part of the a button 91 is hinged on the outer wall of the needle tube through a vertical column, the a spring 92 is connected between one side of the a button 91 and the outer wall of the needle tube, and the other side of the a button 91 is connected with a restraint member 93. The restriction 93 may be a tab or latch, the restriction 93 extending into the needle cannula and abutting the transfer plug 5.
When in use, the a-spring 92 presses the a-button 91 against the outer wall of the needle tube under the action of the elastic force, and the restraint member 93 extends into the needle tube and abuts against the conversion plug 5. Rotating propeller 3 and making first spring 6 compress, can marking corresponding scale on propeller 3, make things convenient for medical personnel to look over the stroke of propeller 3. When the needle core 10 needs to advance to the focus position B, the a key 91 is pressed to enable the restraint piece 93 to retract, and the needle core 10 is ejected to the focus position B under the action of the elastic force of the first spring 6, so that the sampling of a sample is completed.
The utility model discloses a cooperation of first jettison device and first fixing device 9, the length that pre-compaction nook closing member 10 popped out to the arrival focus position B that makes the pjncture needle can be accurate takes a sample, and whole ejection time is extremely short, thereby is favorable to alleviateing patient's misery.
Example 3:
Preferably, to better implement the present invention, further optimization is performed on the basis of the above embodiments, and the following arrangement structure is particularly adopted:
As shown in fig. 1 to 3, the needle tube includes an outer tube 1 and an inner tube 2, and the inner tube 2 is sleeved in the outer tube 1 and can freely slide in the outer tube 1. And a second ejection device and a second fixing device 8 are arranged between the outer tube 1 and the inner tube 2, the second ejection device comprises a second spring 7, and the second spring 7 is arranged between the bottom of the outer tube 1 and the outer side of the bottom of the inner tube 2. The second fixing device 8 comprises a b button 81 and a b spring 82, the middle part of the b button 81 is hinged on the outer wall of the outer tube 1 through a vertical column, the b spring 82 is connected between one side of the b button 81 and the outer wall of the outer tube 1, and the other side of the b button 81 is connected with the restraining cover 4. A central hole for the propeller 3 to extend into is arranged in the center of the constraint cover 4, and an internal thread matched with the external thread of the propeller 3 is arranged on the side wall of the central hole, so that the internal thread does not need to be arranged in the inner pipe 2. At the same time, the restraining cap 4 snaps onto the outer wall of the outer tube 1. Specifically, a protruding portion is provided on the outer wall of the outer tube 1, a fastening hook adapted to the protruding portion is provided on the restraint cover 4, and the other side of the b-button 81 extends into the fastening hook.
in use, the b-spring 82 presses the b-button 81 against the outer wall of the outer tube 1 under the action of the elastic force, and the second spring 7 is in a compressed state. When the needle core 10 needs to retract to the needle head 11, the button b 81 is pressed to disengage the buckling hook from the convex part, and at the moment, the inner tube 2 is ejected under the action of the elastic force of the second spring 7 and drives the needle core 10 to retract to the needle head 11.
The utility model discloses a second jettison device and the cooperation of second fixing device 8 can make inner tube 2 pop out outer tube 1 to in making 10 retractions syringe needle 11 of nook closing member, guaranteed the seal of the sample of getting, whole launch time is also extremely short, further is favorable to alleviateing patient's misery. Meanwhile, the advancing of the stylet 10 is controlled by the a key 91, and the retraction of the stylet 10 is controlled by the b key 81, so that the operation of medical personnel is greatly facilitated, and the probability of misoperation is reduced.
example 4:
preferably, to better implement the present invention, further optimization is performed on the basis of the above embodiments, and the following arrangement structure is particularly adopted:
As shown in fig. 5, a concave step is provided at the position of the orifice of the outer tube 1, a concave groove is provided on the inner sidewall of the outer tube 1, a convex step 21 corresponding to the concave step is provided at the position of the orifice of the inner tube 2, and a convex groove 22 corresponding to the concave groove is provided on the outer sidewall of the inner tube 2. The matching of the concave step and the convex step 21 can ensure that the position of the inner tube 2 arranged on the outer tube 1 is more accurate, and the matching of the concave strip groove and the convex strip groove 22 can prevent the relative rotation between the outer tube 1 and the inner tube 2 from influencing the use of the puncture needle.
Example 5:
preferably, to better implement the present invention, further optimization is performed on the basis of the above embodiments, and the following arrangement structure is particularly adopted:
As shown in fig. 1 to 4, a pintle 12 is further disposed at the bottom of the outer tube 1, the pintle 12 has an external thread, the needle 11 is connected with a needle cap 13, the needle cap 13 has an internal thread, and the needle 11 is detachably mounted on the outer tube 1 through the threaded connection between the needle cap 13 and the pintle 12, so as to facilitate the replacement operation of the needle core 10 and the needle 11.
As shown in fig. 1 to 4, the sharp ends of the core 10 and the needle 11 are needle-like structures, which facilitate puncturing. A chamfer with a shape matched with the shape is arranged at a certain length position of the needle core 10 and the needle 11 away from the tip, and a sampling cavity 14 for sampling is arranged on the needle core 10. When puncturing, the needle core 10 and the sharp end of the needle 11 are jointly penetrated; when the needle core 10 needs to advance, the tip of the needle core 10 is penetrated; when the needle core 10 needs to retract, the inclined cut samples the tissue on the focus position B, and retracts into the needle head 11, at the moment, the needle core 10 is inosculated with the inclined cut of the needle head 11, the sample is positioned in the sealed sampling cavity 14, the accuracy of sample sampling is ensured, and the damage of the inclined cut to other organs or tissues is avoided.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (10)
1. a puncture needle, comprising a needle tube, a pusher (3), a hub (10), and a needle tip (11), wherein:
the needle tube is in threaded connection with the propeller (3);
The needle tube is connected with the needle head (11);
the propeller (3) is movably connected with the needle core (10);
The propeller (3) is in rotating fit with the needle tube thread to drive the needle core (10) to advance or retract.
2. a puncture needle according to claim 1, wherein a first ejector and a first holding means (9) are provided in the needle tube, the pusher (3) cooperates with the first holding means (9) to preload the hub (10) by the first ejector, and the hub (10) is ejected forward when the first holding means (9) is released.
3. A puncture needle according to claim 2, characterized in that the first ejection means comprises a switching plug (5) and a first spring (6), the switching plug (5) being connected to the stylet (10), the first spring (6) being mounted between the pusher (3) and the switching plug (5), the first fixing means (9) constraining the switching plug (5).
4. A puncture needle according to claim 3, characterized in that the first fastening means (9) comprises an a-button (91) and an a-spring (92), the a-button (91) is hinged to the needle cannula, the a-spring (92) is connected between the a-button (91) and the needle cannula, and the a-button (91) is connected with a restraining member (93) for restraining the switching plug (5).
5. The puncture needle according to any one of claims 1 to 4, wherein the needle tube comprises an outer tube (1) and an inner tube (2), the inner tube (2) is sleeved in the outer tube (1), a second ejection device and a second fixing device (8) are arranged between the outer tube (1) and the inner tube (2), the outer tube (1) is matched with the second fixing device (8) to pre-press the inner tube (2) through the second ejection device, and the needle core (10) retracts when the second fixing device (8) is released from constraint.
6. Puncture needle according to claim 5, characterized in that the second ejection means comprise a second spring (7), the second spring (7) being mounted between the outer tube (1) and the inner tube (2), the second fixation means (8) being constrained to the inner tube (2).
7. puncture needle according to claim 6, characterized in that the second fixation means (8) comprises a push-button (81) and a spring (82), the push-button (81) being hinged to the outer tube (1), the spring (82) being connected between the push-button (81) and the outer tube (1), the push-button (81) being connected to a restraining cap (4) for restraining the inner tube (2).
8. A puncture needle according to claim 7, wherein the outer tube (1) is provided with a concave step and a concave groove, and the inner tube (2) is provided with a convex step (21) corresponding to the concave step and a convex groove (22) corresponding to the concave groove, respectively.
9. a puncture needle according to claim 8, characterized in that the outer tube (1) is further provided with a pintle (12), the needle head (11) is connected with a needle cap (13), and the needle head (11) is mounted on the outer tube (1) by means of the detachable connection of the needle cap (13) with the pintle (12).
10. a puncture needle according to claim 9, characterized in that the core (10) and the needle tip (11) have a form-fitting, bevelled cut, and that the core (10) is provided with a sampling chamber (14) for taking a sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179408.8U CN209751177U (en) | 2019-01-31 | 2019-01-31 | Puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179408.8U CN209751177U (en) | 2019-01-31 | 2019-01-31 | Puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209751177U true CN209751177U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920179408.8U Active CN209751177U (en) | 2019-01-31 | 2019-01-31 | Puncture needle |
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| Country | Link |
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| CN (1) | CN209751177U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717934A (en) * | 2019-01-31 | 2019-05-07 | 吴忠隐 | A kind of puncture needle |
| CN111329561A (en) * | 2020-03-10 | 2020-06-26 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Puncture system and puncture guide method |
| CN111449693A (en) * | 2020-05-12 | 2020-07-28 | 浙江省肿瘤医院 | Novel breast tumor puncture device |
-
2019
- 2019-01-31 CN CN201920179408.8U patent/CN209751177U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717934A (en) * | 2019-01-31 | 2019-05-07 | 吴忠隐 | A kind of puncture needle |
| CN109717934B (en) * | 2019-01-31 | 2024-07-19 | 吴忠隐 | Puncture needle |
| CN111329561A (en) * | 2020-03-10 | 2020-06-26 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Puncture system and puncture guide method |
| CN111449693A (en) * | 2020-05-12 | 2020-07-28 | 浙江省肿瘤医院 | Novel breast tumor puncture device |
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