CN215228226U - Internal fistula short needle - Google Patents
Internal fistula short needle Download PDFInfo
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- CN215228226U CN215228226U CN202121149162.3U CN202121149162U CN215228226U CN 215228226 U CN215228226 U CN 215228226U CN 202121149162 U CN202121149162 U CN 202121149162U CN 215228226 U CN215228226 U CN 215228226U
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- internal fistula
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Abstract
The utility model provides an internal fistula short needle belongs to internal fistula needle technical field. It includes the base member, base member one end even have the connecting pipe, the connecting pipe end linked firmly the connecting piece, the connecting piece on detachable be provided with the connecting piece cap, the base member other end linked firmly can reduce the damage that causes the blood vessel and the short needle structure of easily fixing. The connecting piece at connecting pipe end can be used for connecting the transfer line, the connecting piece cap can be protected the connecting piece, prevent that the connecting piece from damaging or contaminated, short needle structure on the base member has shortened the needle body and has exposed out the length outside the base member, thereby can be convenient for the needle body insert completely to the blood vessel in thereby the base member of being convenient for is fixed, thereby the needle body after shortening can also reduce the probability that the needle body pricked blood vessel back wall can reduce the vascular damage, secondly, because needle body length is short, it is thin to subcutaneous, distortion or artificial blood vessel are more convenient suitable.
Description
Technical Field
The utility model belongs to the technical field of internal fistula needle, a short needle of internal fistula is related to.
Background
The internal fistula needle used at present in China is JMS, Delang, Fixece. The length of the internal fistula needle is 2.5 cm. In 2019, the consensus of vascular access experts for hemodialysis in china, version 2, proposed that a mature internal fistula was judged as follows: the inner diameter of the vein of the puncture section is more than or equal to 5mm, and the depth from the skin is less than 6 mm. The condition that the internal fistula needle overlength took place to puncture the blood vessel back wall easily in the use, the needle can not bury, can take place the slippage easily, is difficult for fixing. Particularly, the subcutaneous part of the artificial blood vessel is generally 0.2-0.3cm, the diameter of the artificial blood vessel is generally 0.6cm, and if an internal fistula needle with the length of 2.5cm is adopted, the artificial blood vessel can be easily punctured to the back wall of the artificial blood vessel.
In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, a chinese patent discloses an anti-needling internal fistula puncture needle [ application number: 201910097127.2], comprising two symmetrical needle wings, wherein the front ends of the needle wings are provided with joints, the joints are provided with needles, and a control box is arranged above the needle wings; this prevent acupuncture internal fistula pjncture needle is through the control box that is equipped with, the protection tube, the slider, a spring, buckle and fixture block, make this pjncture needle after using, the user of service can directly press the switch, the protection tube pops out and overlaps on the syringe needle this moment, the syringe needle that is entangled by the protection tube can effectually prevent that the syringe needle from stabbing medical personnel, avoided medical personnel to receive the risk of infecting, the design of fixture block and buckle simultaneously, make medical personnel one hand when extracting the needle, the switch can be pressed simultaneously to another hand pops out the protection tube, the medical personnel's of being convenient for operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, provide an internal fistula short needle.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides an internal fistula short needle, includes the base member, base member one end even have the connecting pipe, the connecting pipe end link firmly the connecting piece, the connecting piece on the detachable be provided with the connecting piece cap, the base member other end link firmly can reduce the damage that causes the blood vessel and easily fixed short needle structure.
In foretell internal fistula short needle, the short needle structure including fix the needle stalk of keeping away from connecting pipe one end at the base member, needle stalk front end needle point has, the needle point dorsal part be equipped with the bar hole.
In the internal fistula short needle, the length of the needle stem exposed out of the outer part of the base body is 1.0cm-1.5cm, and the length of the needle tip is 0.5 cm.
In the internal fistula short needle, the base body is also provided with a needle body adjusting mechanism for adjusting the length of the needle stalk.
In foretell internal fistula short needle, needle body adjustment mechanism adjust the passageway including the needle body that sets up in the base member, needle stalk inner insert in the needle body adjusts the passageway and adjust passageway sliding connection with the needle body, needle stalk inner pass through the hose and link to each other with the liquid flow path in the connecting tube, the base member on still be equipped with needle body actuating mechanism.
In the internal fistula short needle, the inner end of the needle stem is fixedly connected with an annular limiting block matched with the needle body adjusting channel.
In foretell short needle of internal fistula, needle body actuating mechanism including setting up the external screw thread on the base member, the base member on have a driving sleeve through external screw thread spiro union, the driving sleeve pass through connection structure and link to each other with annular stopper.
In foretell an internal fistula short needle, connection structure include the adapter sleeve of being connected with the drive sleeve rotation, the base member both sides still be equipped with the spacing spout that the level set up, annular stopper on be equipped with the gag lever post that inserts to the spacing spout in, gag lever post and adapter sleeve between still linked firmly the connecting rod.
In foretell internal fistula short needle, the drive sheathe in and be equipped with annular rotating groove, the link joint sheathe in link to have the annular rotatory piece of inserting to annular rotatory inslot, the cross-section of annular rotatory groove and annular rotatory piece all be the T type.
In the internal fistula short needle, the base body is symmetrically provided with two wing bodies, and one end of the base body, which is close to the short needle structure, is also detachably provided with a needle cap.
Compared with the prior art, the utility model has the advantages of:
1. the connecting piece at connecting pipe end can be used for connecting the transfer line, the connecting piece cap can be protected the connecting piece, prevent that the connecting piece from damaging or contaminated, short needle structure on the base member has shortened the needle body and has exposed out the length outside the base member, thereby can be convenient for the needle body insert completely to the blood vessel in thereby the base member of being convenient for is fixed, thereby the needle body after shortening can also reduce the probability that the needle body pricked blood vessel back wall can reduce the vascular damage, secondly, because needle body length is short, it is thin to subcutaneous, distortion or artificial blood vessel are more convenient suitable.
2. The needle body adjusting mechanism can adjust the length of the needle stem exposed out of the base body according to different actual requirements when in use.
3. The needle stalk is connected with the liquid flow channel in the connecting pipe through the hose, so that the displacement of the needle stalk does not influence the liquid transmission, and the needle body driving mechanism can drive the needle stalk to move along the needle body adjusting channel, so that the length of the needle stalk exposed out of the base body can be adjusted.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic diagram of the overall structure provided by the present invention;
fig. 2 is a partial structural schematic diagram of the present invention;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
fig. 4 is a partial structural schematic diagram of the first embodiment.
Detailed Description
Example one
As shown in fig. 1, fig. 2 and fig. 4, an internal fistula short needle comprises a base body 1, 1 one end of the base body is connected with a connecting pipe 2, the tail end of the connecting pipe 2 is fixedly connected with a connecting piece 3, the connecting piece 3 is detachably provided with a connecting piece cap 4, the other end of the base body 1 is fixedly connected with a short needle structure 5 which can reduce the damage to blood vessels and is easy to fix.
In this embodiment, the connecting piece at 2 terminal ends of connecting pipe can be used for connecting the transfer line, connecting piece cap 4 can protect the connecting piece, prevent that the connecting piece from damaging or contaminated, the short needle structure on the base member 1 has shortened the needle body and has exposed the length outside the base member, thereby it is fixed to be convenient for the needle body to insert the base member of being convenient for to the blood vessel completely, thereby the probability that the needle body after shortening can also reduce the needle body and prick blood vessel back wall can reduce vascular damage, secondly, because needle body length is short, it is thin to the subcutaneous, distortion or artificial blood vessel are more convenient to be fit for.
Specifically, as shown in fig. 4, the short needle structure 5 includes a needle stem 6 fixed at one end of the base 1 away from the connecting tube 2, the front end of the needle stem 6 has a needle tip 30, and the back side of the needle tip 30 is provided with a strip-shaped hole 31. Thereby the needle stalk 6 can be convenient for the needle body insert completely to the blood vessel in thereby the base member of being convenient for is fixed, thereby the needle body after the shortening can also reduce the probability that the needle body pricked blood vessel back wall can reduce vascular damage, secondly, because needle body length is short, more convenient suitable to subcutaneous thin, distortion or artificial blood vessel.
Preferably, as shown in fig. 4, the length of the needle stem 6 exposed to the outer portion of the base 1 is 1.0cm-1.5cm, and the length of the needle tip 30 is 0.5 cm. The vein that is normal as an internal fistula is judged as: the inner diameter of the puncture section vein is more than or equal to 5mm, the depth from the skin is less than 6mm, and for the artificial blood vessel: the subcutaneous part is generally 0.2-0.3cm, the diameter of the artificial blood vessel is generally 0.6cm, and therefore, the needle stalk with the length of 1.0cm-1.5cm can completely meet the puncture requirement; compared with the needle body with the length of 2.5cm in the prior art, the needle stem with the length of 1.0cm-1.5cm can reduce the damage to the blood vessel and is easy to fix.
Preferably, the needle stalk 6 has a length of 1.0 cm.
Preferably, as shown in fig. 4, the base body is further sleeved with an annular sleeve 50 capable of rotating circumferentially, two wing bodies 22 are symmetrically arranged on the annular sleeve 50, and the annular sleeve 50 can rotate to enable the wing bodies 22 to rotate, so that the base body can be conveniently fixed at different angles.
The working principle of the first embodiment is as follows: the connecting piece at the tail end of the connecting pipe 2 can be used for connecting a transfusion pipe, the connecting piece cap 4 can protect the connecting piece and prevent the connecting piece from being damaged or polluted, the short needle structure on the base body 1 shortens the length of the needle body exposed out of the base body, the needle body can be conveniently and completely inserted into a blood vessel so as to be convenient for the base body to be fixed, the shortened needle body can also reduce the probability that the needle body pierces the back wall of the blood vessel so as to reduce the blood vessel damage, and secondly, because the length of the needle body is short, the connecting piece is more convenient and suitable for subcutaneous thin, twisted or artificial blood vessels; thereby the needle stalk 6 can be convenient for the needle body insert the base member of being convenient for to blood vessel completely fixed, thereby the needle body after shortening can also reduce the probability that the needle body pricked blood vessel back wall and can reduce vascular damage, secondly, because needle body length is short, to the subcutaneous thin, distortion or artificial blood vessel more convenient be fit for, to normally as the vein judgement of internal fistula: the inner diameter of the puncture section vein is more than or equal to 5mm, the depth from the skin is less than 6mm, and for the artificial blood vessel: the subcutaneous part is generally 0.2-0.3cm, the diameter of the artificial blood vessel is generally 0.6cm, and therefore, the needle stalk with the length of 1.0cm-1.5cm can completely meet the puncture requirement; compared with a needle body with the length of 2.5cm in the prior art, the needle stem with the length of 1.0cm-1.5cm can reduce damage to blood vessels and is easy to fix, the annular sleeve can rotate to enable the wing body to rotate, and the base body can be conveniently fixed at different angles.
Example two
The structure and the working principle of the second embodiment are basically the same as those of the first embodiment, and the difference is that:
preferably, as shown in fig. 1-3, the base body 1 is further provided with a needle body adjusting mechanism 7 for adjusting the length of the needle stem 6. The needle body adjusting mechanism 7 can adjust the length of the needle stem exposed out of the base body according to different actual requirements when in use.
Specifically, as shown in fig. 1-3, the needle adjusting mechanism 7 includes a needle adjusting channel 8 disposed in the base body 1, the inner end of the needle stem 6 is inserted into the needle adjusting channel 8 and slidably connected to the needle adjusting channel 8, the inner end of the needle stem 6 is connected to a liquid flow channel 10 in the connecting tube 2 through a hose 9, and the base body 1 is further provided with a needle driving mechanism 11. The needle stem 6 is connected with the liquid flow channel 10 in the connecting pipe 2 through the hose 9, so that the displacement of the needle stem does not influence the liquid transmission, and the needle body driving mechanism 11 can drive the needle stem to move along the needle body adjusting channel, so that the length of the needle stem exposed out of the base body can be adjusted.
Preferably, as shown in fig. 2, the inner end of the needle stem 6 is further fixedly connected with an annular stopper 12 adapted to the needle body adjusting channel 8. The annular limiting block 12 can limit the needle stem 6, and prevent the needle stem from being loosened during puncture to cause inaccurate puncture into the blood vessel.
Specifically, referring to fig. 1-3, the needle body driving mechanism 11 includes an external thread 13 disposed on the base 1, the base 1 is screwed with a driving sleeve 14 through the external thread 13, and the driving sleeve 14 is connected to the annular stopper 12 through a connecting structure 15. The driving sleeve 14 can be rotated to reciprocate along the axial direction of the base body, and the driving sleeve 14 can drive the annular limiting block and the needle stem to move through the connecting structure 15.
Specifically, as shown in fig. 1-3, the connection structure 15 includes a connection sleeve 16 rotatably connected to the driving sleeve 14, the two sides of the base 1 are further provided with horizontally arranged limiting sliding grooves 17, the annular limiting block 12 is provided with a limiting rod 18 inserted into the limiting sliding grooves 17, and a connection rod 19 is further fixedly connected between the limiting rod 18 and the connection sleeve 16; the connecting sleeve 16 is rotatably connected with the driving sleeve to prevent the connecting sleeve from rotating along with the driving sleeve, and the connecting sleeve 16 can drive the needle peduncle to move through the connecting sleeve, the connecting rod and the limiting rod when the driving sleeve moves.
Preferably, the limiting slide groove 17 can limit the limiting rod 18. Specifically, as shown in fig. 1 and 2, when the needle stem 6 abuts against one side of the limiting chute close to the connecting pipe, the length of the needle stem is 1.0 cm; when the needle stalk 6 is abutted against one side of the limiting chute, which is far away from the connecting pipe, the length of the needle stalk is 1.5cm, so that the length of the needle stalk 6 can be adjusted between 1.0cm and 1.5 cm.
Specifically, as shown in fig. 3, an annular rotation groove 20 is formed in the driving sleeve 14, an annular rotation block 21 inserted into the annular rotation groove 20 is fixedly connected to the connecting sleeve 16, and the sections of the annular rotation groove 20 and the annular rotation block 21 are both T-shaped to prevent the connecting sleeve from being separated from the driving sleeve.
Preferably, as shown in fig. 1 and fig. 2, two wing bodies 22 are further symmetrically arranged on the base body 1, the wing bodies 22 can be operated by a user conveniently, a needle cap 23 is further detachably arranged at one end of the base body 1 close to the short needle structure 5, and the needle cap 23 can protect a needle stalk.
The utility model discloses a theory of operation is: the connecting piece at the tail end of the connecting pipe 2 can be used for connecting a transfusion pipe, the connecting piece cap 4 can protect the connecting piece and prevent the connecting piece from being damaged or polluted, the short needle structure on the base body 1 shortens the length of the needle body exposed out of the base body, the needle body can be conveniently and completely inserted into a blood vessel so as to be convenient for the base body to be fixed, the shortened needle body can also reduce the probability that the needle body pierces the back wall of the blood vessel so as to reduce the blood vessel damage, and secondly, because the length of the needle body is short, the connecting piece is more convenient and suitable for subcutaneous thin, twisted or artificial blood vessels; the needle stem 6 can facilitate the needle body to be completely inserted into the blood vessel so as to facilitate the matrix fixation, the shortened needle body can also reduce the probability that the needle body pierces the back wall of the blood vessel so as to reduce the blood vessel injury, and secondly, the needle body is more convenient and suitable for subcutaneous thin, twisted or artificial blood vessels because of the short length of the needle body;
the vein that is normal as an internal fistula is judged as: the inner diameter of the puncture section vein is more than or equal to 5mm, the depth from the skin is less than 6mm, and for the artificial blood vessel: the subcutaneous part is generally 0.2-0.3cm, the diameter of the artificial blood vessel is generally 0.6cm, and therefore, the needle stalk with the length of 1.0cm-1.5cm can completely meet the puncture requirement; compared with a needle body with the length of 2.5cm in the prior art, the needle stem with the length of 1.0cm-1.5cm can reduce damage to blood vessels and is easy to fix, the needle body adjusting mechanism 7 can adjust the length of the needle stem exposed out of the base body according to different actual requirements when in use, the needle stem 6 is connected with the liquid flow channel 10 in the connecting pipe 2 through the hose 9, so that the displacement of the needle stem cannot influence liquid transmission, the needle body driving mechanism 11 can drive the needle stem to move along the needle body adjusting channel, so that the length of the needle stem exposed out of the base body can be adjusted, the annular limiting block 12 can limit the needle stem 6, and the situation that the needle stem cannot be accurately punctured into the blood vessels due to looseness during puncturing is prevented;
the driving sleeve 14 can be rotated to make the driving sleeve reciprocate along the axial direction of the base body, the driving sleeve 14 can drive the annular limiting block and the needle stem to move through the connecting structure 15, the connecting sleeve 16 is rotatably connected with the driving sleeve to prevent the connecting sleeve from rotating along with the driving sleeve, the connecting sleeve 16 can drive the needle stem to move through the connecting sleeve, the connecting rod and the limiting rod when the driving sleeve moves, and when the needle stem 6 abuts against one side, close to the connecting pipe, of the limiting sliding chute, the length of the needle stem is 1.0 cm; when the needle stalk 6 is abutted against one side of the limiting chute, which is far away from the connecting pipe, the length of the needle stalk is 1.5cm, so that the length of the needle stalk 6 can be adjusted between 1.0cm and 1.5 cm.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The utility model provides an internal fistula short needle, includes base member (1), base member (1) one end even have connecting pipe (2), connecting pipe (2) end link firmly connecting piece (3), connecting piece (3) on the detachable be provided with connecting piece cap (4), its characterized in that, base member (1) other end link firmly can reduce damage and easily fixed short needle structure (5) that cause the blood vessel.
2. An internal fistula short needle as set forth in claim 1, wherein the short needle structure (5) comprises a needle stem (6) fixed to one end of the base body (1) away from the connecting tube (2), the front end of the needle stem (6) is provided with a needle tip (30), and the back side of the needle tip (30) is provided with a strip-shaped hole (31).
3. An internal fistula short needle as set forth in claim 2, wherein the length of the needle stem (6) exposed to the outer portion of the base body (1) is 1.0cm to 1.5cm, and the length of the needle tip (30) is 0.5 cm.
4. An internal fistula short needle as set forth in claim 3, characterized in that the base body (1) is further provided with a needle body adjusting mechanism (7) for adjusting the length of the needle stalk (6).
5. An internal fistula short needle as set forth in claim 4, wherein the needle body adjusting mechanism (7) comprises a needle body adjusting channel (8) disposed in the base body (1), the inner end of the needle stem (6) is inserted into the needle body adjusting channel (8) and slidably connected with the needle body adjusting channel (8), the inner end of the needle stem (6) is connected with a liquid flow channel (10) in the connecting tube (2) through a hose (9), and the base body (1) is further provided with a needle body driving mechanism (11).
6. An internal fistula short needle as set forth in claim 5, characterized in that the inner end of the needle stem (6) is further fixedly connected with an annular stopper (12) adapted to the needle body adjusting channel (8).
7. An internal fistula short needle according to claim 6, wherein the needle body driving mechanism (11) comprises an external thread (13) arranged on the base body (1), a driving sleeve (14) is screwed on the base body (1) through the external thread (13), and the driving sleeve (14) is connected with the annular limit block (12) through a connecting structure (15).
8. An internal fistula short needle according to claim 7, wherein the connecting structure (15) comprises a connecting sleeve (16) rotatably connected with a driving sleeve (14), two sides of the base body (1) are further provided with horizontally arranged limiting sliding grooves (17), the annular limiting block (12) is provided with a limiting rod (18) inserted into the limiting sliding grooves (17), and a connecting rod (19) is further fixedly connected between the limiting rod (18) and the connecting sleeve (16).
9. An internal fistula short needle as set forth in claim 8, wherein the driving sleeve (14) is provided with an annular rotary groove (20), the connecting sleeve (16) is fixedly connected with an annular rotary block (21) inserted into the annular rotary groove (20), and the sections of the annular rotary groove (20) and the annular rotary block (21) are both T-shaped.
10. A short internal fistula needle as set forth in any one of claims 1 to 9, wherein the base body (1) is further symmetrically provided with two wing bodies (22), and the base body (1) is further detachably provided with a needle cap (23) at an end close to the short needle structure (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121149162.3U CN215228226U (en) | 2021-05-26 | 2021-05-26 | Internal fistula short needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121149162.3U CN215228226U (en) | 2021-05-26 | 2021-05-26 | Internal fistula short needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215228226U true CN215228226U (en) | 2021-12-21 |
Family
ID=79459057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121149162.3U Active CN215228226U (en) | 2021-05-26 | 2021-05-26 | Internal fistula short needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215228226U (en) |
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2021
- 2021-05-26 CN CN202121149162.3U patent/CN215228226U/en active Active
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