CN116807578A - Puncture needle for difficult part drainage, biopsy and thermal ablation cyclic isolation liquid - Google Patents
Puncture needle for difficult part drainage, biopsy and thermal ablation cyclic isolation liquid Download PDFInfo
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- CN116807578A CN116807578A CN202310854349.0A CN202310854349A CN116807578A CN 116807578 A CN116807578 A CN 116807578A CN 202310854349 A CN202310854349 A CN 202310854349A CN 116807578 A CN116807578 A CN 116807578A
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- needle
- outer sleeve
- puncture
- water outlet
- water inlet
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- 239000007788 liquid Substances 0.000 title claims abstract description 63
- 238000002955 isolation Methods 0.000 title claims abstract description 52
- 238000002679 ablation Methods 0.000 title claims abstract description 44
- 238000001574 biopsy Methods 0.000 title claims abstract description 34
- 125000004122 cyclic group Chemical group 0.000 title claims description 9
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- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 238000013461 design Methods 0.000 description 3
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 238000013188 needle biopsy Methods 0.000 description 2
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- 230000002792 vascular Effects 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
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- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
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- 239000003302 ferromagnetic material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
- A61B17/3496—Protecting sleeves or inner probes; Retractable tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/04—Protection of tissue around surgical sites against effects of non-mechanical surgery, e.g. laser surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
- A61B2017/3456—Details of tips blunt
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/04—Protection of tissue around surgical sites against effects of non-mechanical surgery, e.g. laser surgery
- A61B2090/0409—Specification of type of protection measures
- A61B2090/0427—Prevention of contact
Abstract
The application relates to the technical field of puncture instruments, and particularly discloses a puncture needle for drainage, biopsy and thermal ablation circulating isolation liquid of difficult parts. The advantages are that: the device can be used for drainage of a difficult part position tube, puncture biopsy and establishment of circulating isolation liquid, puncture drainage of the difficult part can be carried out through one puncture needle, the operation of circulating isolation liquid protection is established during puncture biopsy and thermal ablation, the defect that the prior art needs to additionally and specially utilize an ablation protection isolation device to carry out the operation of isolating liquid circulation is overcome, the ablation operation flow is simplified, the circulating outflow of the isolation liquid can be ensured, and the safety of the ablation process is ensured.
Description
Technical Field
The application relates to the technical field of puncture instruments, in particular to a puncture needle for difficult part drainage, biopsy and thermal ablation circulating isolation liquid.
Background
The puncture needle is a medical instrument for sampling and injecting the organ tissues such as the kidney in the minimally invasive surgery. The existing puncture needle structure has a great deal of literature reports. For example, CN205493887U, the puncture needle comprises a hollow outer needle tube and a needle core adapted to the inner diameter of the hollow outer needle tube, the hollow outer needle tube comprises a needle tube tip with an inclined surface, the needle core body is a columnar needle core, the needle core can seamlessly fill the lumen of the outer needle tube, and the head end of the needle core is a needle core tip adapted to the inclined surface of the needle tip.
There are three basic operations in the field of ultrasound intervention: catheterization drainage, needle biopsy and thermal ablation. In difficult locations, there may be hollow organs, such as intestinal tracts or blood vessels, between the puncture drainage target region and the puncture site of the skin. When lesions appear at these sites and a catheterization or needle biopsy is required, the patient often needs to receive surgical treatment, increasing pain and the risk of surgical complications.
The method is characterized in that a liquid isolation belt is established during thermal ablation, the existing clinical thermal ablation is an effective mode for protecting surrounding normal tissues from thermal injury, a puncture needle is accurately and safely punctured into a target gap under the real-time guidance of ultrasound, a needle core is withdrawn, an injector filled with isolation liquid is connected, the liquid is injected into the target gap under the real-time monitoring of ultrasound, a protection zone of the liquid is formed by expanding the gap, and a focus and surrounding structures which are originally clung together are manually separated. The prior clinical thermal ablation establishes a liquid isolation belt, which is injected into the peripheral tissues of the tumor by an injector or a puncture needle before operation, but the biggest disadvantage of the preoperative injection mode is that the isolation liquid is dispersed, lessened and disappeared in the ablation process, and the isolation liquid can only be re-injected by stopping the thermal ablation operation, so the prior isolation liquid injection mode has complex operation, repeated injection, increased operation trauma, increased operation steps and incapability of monitoring the temperature of the injected isolation liquid.
The prior art discloses a scheme of utilizing a balloon to isolate and forming circulating isolating liquid in the balloon, wherein the balloon isolating scheme is characterized in that the balloon arranged on the surface cannot be directly punctured due to the existence of the balloon, a puncture channel is required to be established by a hollow puncture needle, and then the isolating balloon is arranged in the puncture channel. As in patent document 2018216209576, an ablation protection and isolation device is disclosed for isolating a focus and normal organs of a human body, and comprises a guide wire, a delivery sheath, a balloon and a protection catheter, wherein a liquid inlet and outlet channel communicated with the balloon is formed on the wall of one side of the protection catheter, and a channel for liquid circulation is formed among the liquid outlet channel, the liquid inlet channel and the balloon. Although the patent discloses that a balloon and a liquid inlet channel and a liquid outlet channel are used for establishing a channel for liquid circulation, in order to place a protective catheter with the balloon, the scheme needs to firstly use a puncture needle of a hollow tubular needle to set up the channel, and then guide the balloon into a target area of a human body through a guide wire.
In addition, patent document 2019102912353 discloses a novel puncture needle, including pjncture needle body, blunt point, elastic component, elasticity adjusting device, pjncture needle body head is pointed and has seted up the through-hole along the axis, through-hole upper end sliding connection has blunt point. When the puncture needle reaches the inner space of the cavity, the resistance caused by the tissue is lost, the blunt tip is ejected out of the sharp tip, and the sharp tip is effectively prevented from mistakenly pricking the viscera. Although the patent discloses the use of a retractable blunt tip and a fixed needle tip outer sleeve, the false injury of tissues and internal organs in the process of tip puncture is prevented. But the patent utilizes spring device automatically regulated passive head end's extension and withdrawal, and not only the structure is very complicated, and more importantly when there is cavity viscera between puncture drainage target area and the puncture point of skin, fixed needle point outer tube still can harm the viscera, and this scheme can't be used for the position pipe drainage and the puncture biopsy of difficult position.
In view of the above-mentioned shortcomings of the prior art, it is necessary to design a needle that can be used for drainage, biopsy and thermal ablation cycling spacer fluid at difficult sites.
Disclosure of Invention
Aiming at the defects in the prior art, the application provides the puncture needle for the circulation isolating liquid of difficult part drainage, biopsy and thermal ablation, and the puncture needle does not need other extra devices, so that the puncture needle can be used as a cannula puncture needle to realize safe puncture biopsy and catheterization drainage of difficult parts, and the liquid isolating belt in a circulation state can be effectively established by directly utilizing the puncture needle cannula after puncture.
In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
the puncture needle for the drainage, biopsy and thermal ablation circulating isolation liquid of the difficult part comprises a hollow outer sleeve and a needle core matched with the inner diameter of the hollow outer sleeve, wherein the head end of the needle core is a needle point, and the tail end of the needle core is provided with a needle handle; the tail end of the outer sleeve is provided with a needle handle limiting device which is detachably connected with the tail end of the outer sleeve; the two sides close to the tail end of the outer sleeve are respectively provided with a water inlet and a water outlet, a water inlet cavity and a water outlet cavity are arranged in the side wall of the outer sleeve, the head end of the outer sleeve is provided with a water inlet hole and a water outlet hole, the water inlet cavity and the water inlet hole are sequentially communicated, and the water outlet, the water outlet cavity and the water outlet hole are sequentially communicated; the head end of the outer sleeve is an arc blunt end; the needle core is provided with a needle core scale mark, and when the needle core scale mark is level with the tail end of the outer sleeve, the needle point is positioned in the arc blunt end; when the needle core scale mark is positioned at the lower side of the tail end of the outer sleeve, the needle point is positioned at the outer part of the arc blunt point.
In the puncture needle for the drainage, biopsy and thermal ablation cyclic isolation liquid of the difficult part, preferably, the water inlet is provided with a water inlet protective cap, and the water outlet is provided with a water outlet protective cap.
In the above-mentioned puncture needle for drainage, biopsy and thermal ablation cyclic spacer fluid of a difficult site, preferably, the detachable connection is a threaded connection.
In the above puncture needle for drainage, biopsy and thermal ablation cyclic isolation liquid of difficult parts, preferably, the needle handle limiting device is of a hollow cap structure, one end is closed, the other end is an open end, an internal thread is arranged at the open end, and an external thread matched with the internal thread is arranged on the surface of the tail end of the outer sleeve.
In the puncture needle for the drainage, biopsy and thermal ablation cyclic isolation liquid of the difficult part, preferably, the water inlet hole and the water outlet hole are respectively arranged at two sides of the arc blunt point.
In the puncture needle for the drainage, biopsy and thermal ablation cyclic isolation liquid of the difficult part, preferably, the side wall of the outer sleeve, which is close to the head end, is an arc-shaped part, the diameter of the arc-shaped part is gradually reduced, and the radian of the arc-shaped part is 1-30 degrees.
In the puncture needle for drainage, biopsy and thermal ablation circulating isolation liquid of the difficult part, preferably, the bottom surface of the needle handle limiting device is provided with a magnetic cavity, a magnet capable of freely rotating is arranged in the magnetic cavity, a supporting shaft is arranged at the bottom surface of the magnetic cavity corresponding to the center position of the magnet, and a circle of outer sleeve scale marks are arranged at the adjacent positions of the tail end of the outer sleeve.
The application has the advantages that:
1. the device can be used for drainage, biopsy and thermal ablation circulation isolation liquid of difficult parts simultaneously, can establish circulation isolation liquid protection operation during puncture drainage, puncture biopsy and thermal ablation of the difficult parts through one puncture needle, eliminates the need of extra special utilization of an ablation protection isolation device for isolation liquid circulation operation in the prior art, and simplifies the ablation operation flow.
2. The side wall of the puncture needle is provided with a water inlet, a water inlet cavity, a water inlet hole, a water outlet cavity and a water outlet, and a circulation channel of isolation liquid is formed, so that the puncture needle sleeve is directly utilized to efficiently establish a liquid isolation belt in a circulation state without other additional devices in the thermal ablation process, the isolation liquid is ensured to circularly flow out, the operation damage caused by dispersion of the isolation liquid is avoided, the temperature of the isolation liquid is monitored by an external temperature measuring device to avoid overheat damage, and the safety of the ablation process is ensured.
3. The tail end of the needle core is provided with a needle handle, the tail end of the outer sleeve is provided with a needle handle limiting device, the head end of the outer sleeve is an arc blunt end, and a doctor can freely switch the head of the puncture needle back and forth in a needle point mode and a blunt end mode through the needle handle limiting device, so that the doctor can accurately operate, safely bypass intestinal tracts or vascular tissues on a puncture path, and realize puncture catheterization drainage and puncture biopsy of difficult parts.
4. The magnetic cavity and the magnet are arranged, the upper and lower positions of the needle handle limiting device can be directly and rotationally adjusted, the needle point at the head end of the needle core is driven by magnetic attraction to extend or retract, and the mode can be rapidly switched without taking down the needle handle limiting device.
5. Through setting up the back shaft, reduce the area of contact of magnet and magnetic cavity bottom surface, avoid puncture and establish the needle point rotation disturbance damage puncture position's of circulation spacer fluid in-process tissue, improve the accuracy and the security of puncture.
Drawings
FIG. 1 is a schematic diagram of the internal structure of a puncture needle for difficult site drainage, biopsy and thermal ablation cyclic isolation liquid according to the application.
Fig. 2 is a schematic view showing a state in which the needle handle limiting device is taken out to retract the needle tip into the outer sleeve.
Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.
Fig. 4a is a schematic view of the head end of the outer sleeve in top view.
Fig. 4b is a schematic perspective view of the head end of the outer cannula and the head end of the core.
FIG. 5 is a schematic view showing the internal structure of a puncture needle according to another embodiment of the present application.
FIG. 6 is a schematic view of the needle handle stop device of FIG. 5 rotated to retract the needle tip into the outer cannula.
The reference numerals and components referred to in the above figures are as follows:
100. outer sleeve 200, needle core 201, needle handle
101. Needle handle limiting device 102, water inlet 103 and water outlet
104. A water inlet chamber 105, a water outlet chamber 106, and water inlet holes
107. Water outlet 108, arc blunt 109, water inlet protective cap
110. The water outlet protective cap 111, the tail end 202 of the outer sleeve, and the scale marks of the needle core
112. Arc 113, baffle 114, outer sleeve scale mark
115. Magnetic cavity 116, magnet 117, support shaft
Detailed Description
The application is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Further, it is understood that various changes and modifications of the present application may be made by those skilled in the art after reading the description of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.
Example 1
Referring to fig. 1, a puncture needle for drainage, biopsy and thermal ablation circulation isolation liquid of a difficult part comprises a hollow outer sleeve 100 and a needle core 200 which is matched with the inner diameter of the hollow outer sleeve, wherein the needle core can be inserted into an inner cavity of the outer sleeve and can move up and down relative to the outer sleeve, the head end of the needle core is a needle point, and when the needle core moves down relative to the outer sleeve, the needle point passes through the head end of the outer sleeve and is positioned outside the head end of the outer sleeve; when the needle core moves upwards relative to the outer sleeve, the needle tip passes through and retreats to the inside of the outer sleeve. The tail end of the needle core is provided with a needle handle 201, the needle core and the outer sleeve are relatively moved by external force acting on the needle handle during operation, the shape of the needle handle is not particularly limited, the needle handle can be cylindrical or in a raw disc shape, preferably the diameter of the needle handle is larger than the diameter of the needle core, and the diameter of the needle handle is smaller than the inner diameter of the outer sleeve. The outer sleeve tail end is provided with a needle handle limiting device 101, the needle handle limiting device is detachably connected with the outer sleeve tail end, the detachable connection can be threaded connection or buckle connection, and the like, and the specific structure of the needle handle limiting device is as follows: the needle handle limiting device is of a hollow cap structure, one end of the needle handle limiting device is a closed end, the other end of the needle handle limiting device is an open end, an internal thread is arranged on the inner surface of the open end, an external thread matched with the external thread is arranged on the surface of the tail end of the outer sleeve, and the needle handle limiting device can be fixed at the tail end of the outer sleeve or detached through rotation.
Referring to fig. 1, 2, 3 and 4, a water inlet 102 and a water outlet 103 are respectively arranged at two sides close to the tail end of the outer sleeve, a water inlet chamber 104 and a water outlet chamber 105 which are mutually independent are respectively arranged in the side wall of the outer sleeve, the water inlet chamber and the water outlet chamber are separated by a partition plate 113, a water inlet hole 106 and a water outlet hole 107 are arranged at the head end of the outer sleeve, the water inlet chamber and the water inlet hole are sequentially communicated, and the water outlet, the water outlet chamber and the water outlet hole are sequentially communicated. According to the application, the water inlet cavity, the water inlet hole, the water outlet cavity and the water outlet form a circulation channel of the isolation liquid, the isolation liquid is injected into the water inlet, and the injected isolation liquid is pumped out through the external negative pressure device connected with the water outlet, so that not only can the operation damage caused by the dispersion of the isolation liquid be avoided, but also the overheat damage can be avoided by externally monitoring the isolation liquid.
Referring to fig. 1, 2, 3 and 4, the head end of the outer sleeve is an arc blunt end 108, the surface of the arc blunt end is an arc blunt surface, the needle handle limiting device is installed at the tail end of the outer sleeve when the tube drainage and the puncture biopsy are performed at a difficult position, the needle handle limiting device is screwed clockwise to enable the needle handle to be propped against the bottom surface of the needle handle limiting device, the needle handle is fixed between the bottom surface of the needle handle limiting device and the tail end of the outer sleeve, and at the moment, the needle point is positioned outside the arc blunt end (the state shown in fig. 1); the needle handle limiting device is separated from the tail end of the outer sleeve by rotating the needle handle anticlockwise, and the needle core is pulled out outwards through the needle handle so that the needle tip is positioned in the arc blunt end (the state shown in fig. 2). According to the application, through the design of the needle handle limiting device, the arc blunt tip and the needle handle, the head of the puncture needle can be freely switched back and forth in a needle tip mode (figure 1) and a blunt tip mode (figure 2) by manual operation, the needle tip mode is used for puncturing the needle, and the blunt tip mode is used for pulling out the intestinal tract or bypassing the blood vessel, so that the damage to the intestinal tract or the blood vessel is avoided.
Referring to fig. 1 and 2, the needle core is provided with a needle core scale mark 202, when the needle core scale mark is aligned with the tail end 111 of the outer sleeve, the needle tip is positioned in the arc blunt tip, and the puncture needle is in a blunt tip mode at this time; when the needle core scale mark is positioned at the lower side of the tail end of the outer sleeve, the needle tip is positioned at the outer part of the arc blunt point, and the puncture needle is in a puncture mode. According to the application, through the arrangement of the needle core scale marks, a doctor can judge the position of the needle head through the needle core scale marks in the use process, so that the operation is more convenient.
Referring to fig. 3 and 4b, the side wall of the outer sleeve near the head end is an arc-shaped portion 112, the diameter of the arc-shaped portion is gradually reduced, the arc of the arc-shaped portion is preferably 1-30 °, and more preferably the arc of the arc-shaped portion is 5-8 °. The outer sleeve is designed into an arc shape with continuously reduced size near the head end, so that friction between the surface of the outer sleeve and human tissues in the process of puncturing and needle insertion is reduced, and puncturing and needle insertion are facilitated. In a preferred embodiment of the present application, as shown in fig. 1, a water inlet protection cap 109 is provided on the water inlet, a water outlet protection cap 110 is provided on the water outlet, and the two protection caps are detachably connected with the water inlet and the water outlet through a sleeving, threaded connection or clamping manner, when the circulating isolation liquid needs to be established, the two protection caps are removed, and when the puncturing operation is performed, the two protection caps are sleeved on the water inlet and the water outlet to be fixed.
Referring to fig. 4a and fig. 4b, the water inlet holes and the water outlet holes are disposed on the arc blunt surface, the water inlet holes and the water outlet holes are respectively disposed on two sides of the partition board, the number of the water inlet holes and the water outlet holes is not particularly required, 1-10 water inlet holes and 10 water outlet holes can be respectively disposed, preferably, the number of the water inlet holes and the water outlet holes is 1-5, and more preferably, the number of the water inlet holes and the water outlet holes is 4.
The application method of the application comprises the following steps:
drainage of the difficult position tube and puncture biopsy. Under the guidance of ultrasound, the operating doctor holds the outer tube wall of the puncture needle and puts the puncture needle into the target puncture area. When the puncture needle tip is about to contact the intestinal tract or the blood vessel, the position of the outer tube wall of the puncture needle is kept motionless, the needle handle limiting device is rotated anticlockwise and removed, and the needle handle is pulled out. And stopping pulling out the needle core outwards when the needle core scale mark is flush with the tail end of the outer sleeve. At this time, the needle point is just positioned inside the rounded outer sleeve head end, and a doctor can hold the outer sleeve wall for safe operation. Next, the needle is inserted into the target area by pulling the intestinal tract open or bypassing the blood vessel at the arcuate blunt tip of the ultrasound-guided needle. If difficulty is encountered during the needle insertion process, the needle handle may be inserted back down and the handle stop may be mounted in place to secure the needle handle. After the needle point is observed to reach the target area, the needle handle is pulled out, and a guide wire is inserted into the inner cavity of the puncture needle, so that the rest catheter-setting drainage operation is completed. When tissue aspiration biopsy is performed, a puncture needle specially used for the aspiration biopsy is placed into the cavity of the puncture needle, and at the moment, the application can be used as a trocar to realize the purposes of safe aspiration biopsy and repeated sampling.
Establishing a circulating liquid isolation belt during thermal ablation: firstly, the protective cap of the water inlet is taken down, physiological saline is injected into the water inlet cavity, and after the physiological saline fills the water inlet cavity, the physiological saline is discharged from the water inlet hole. The protective cap of the water inlet is then installed back, the purpose of this operation being to expel the air from the inlet chamber. Next, a puncturing operation is performed. The operator holds the outer tube wall of the puncture needle, places the needle tip of the puncture needle at the position where the liquid isolation belt is to be established by thermal ablation, removes the needle handle limiting device and pulls out the needle handle. And stopping pulling out the needle core outwards when the needle core mark scale is flush with the tail end of the outer sleeve. At this time, the needle tip is just inside the blunt outer cannula head end. And then the protective sleeve of the water inlet is taken down, the protective sleeve is connected with a physiological saline injection device, and physiological saline is input into the water inlet so as to establish a liquid isolation belt during thermal ablation. And after the satisfactory effect is achieved, the protective sleeve of the water outlet is taken down, and the negative pressure device is connected to the water outlet end. In this way, normal saline enters the water outlet chamber through the water outlet hole of the water outlet chamber and is discharged from the water outlet. By such circulation, the circulated liquid barrier tape was successfully established. In the thermal ablation process, normal saline can be intermittently or continuously injected into the water inlet, and the normal saline is pumped from the water outlet. The water inlet chamber and the water outlet chamber are separated by the partition board, so that the device can efficiently establish a liquid isolation belt in a circulating state, and the safety of tissues around an ablation target area is effectively protected.
The application is characterized in that the side wall of the puncture needle is provided with the water inlet, the water inlet cavity, the water inlet hole, the water outlet cavity and the water outlet, and a circulation channel of the isolation liquid is formed, so that the puncture needle sleeve is directly utilized to efficiently establish the liquid isolation belt in a circulation state without other extra devices in the thermal ablation process, thereby avoiding operation damage caused by dispersion of the isolation liquid, and avoiding overheat damage by externally monitoring the isolation liquid. According to the application, the tail end of the needle core is provided with the needle handle, the tail end of the outer sleeve is provided with the needle handle limiting device, the head end of the outer sleeve is an arc blunt end, and a doctor can freely switch the head of the puncture needle back and forth in a needle point mode and a blunt end mode through the needle handle limiting device, so that the needle is convenient to insert and safely operate, and intestinal tracts or vascular tissues on a puncture path can be safely bypassed, and puncture catheterization drainage and puncture biopsy of difficult parts are completed.
Example 2
In order to optimize the operation flow of the needle core retraction, the structures of the needle handle limiting device and the needle handle are further optimized. As shown in FIG. 5, the needle handle limiting device is made of medical polyvinyl chloride material, medical polypropylene material or medical polyethylene material, a magnetic cavity 115 is arranged on the bottom surface of the needle handle limiting device, a magnet 116 capable of freely rotating is arranged in the magnetic cavity, the size of the magnetic cavity is slightly larger than that of the magnet, a fixed supporting shaft 117 is arranged on the bottom surface of the magnetic cavity corresponding to the center position of the magnet and is in contact with the bottom surface of the magnet, a circle of outer sleeve scale marks 114 are arranged on the position adjacent to the tail end 111 of the outer sleeve, and a ferromagnetic material or a metal material containing iron, cobalt, nickel, manganese and the like is arranged on the needle handle. According to the embodiment, through the design of the magnetic cavity, the magnet in the magnetic cavity is attracted with the needle handle, when the needle point retreating operation is carried out, a doctor rotates anticlockwise to enable the needle handle limiting device to move upwards, when the opening end of the needle handle limiting device is level with the outer sleeve scale marks, the needle point is just located inside the round blunt outer sleeve head end (shown in fig. 6), the puncture needle is in a blunt mode, and when the needle point mode needs to be switched, only the clockwise rotation is needed to enable the needle handle limiting device to move downwards, so that the opening of the needle handle limiting device is propped against the side walls of the water inlet and the water outlet (shown in fig. 5). In the process of tube placement drainage, biopsy puncture and thermal ablation establishment of a circulating liquid isolation belt, the puncture needle needs to be switched into a blunt end mode and a needle point mode for many times, and the upper and lower positions of the needle handle limiting device can be directly adjusted in a rotating mode through the arrangement of the magnetic cavity and the magnet, so that the needle point at the head end of the needle core is driven by magnetic attraction to extend or retract, and the mode can be switched rapidly without taking down the needle handle limiting device. Through setting up the back shaft, reduce the area of contact of magnet and magnetic cavity bottom surface, the needle point that has the chamfer can not rotate along with needle handle stop device is rotatory at rotatory needle handle stop device in-process, and the nook closing member moves perpendicularly under magnetic force, avoids puncture and establishes the tissue that the circulation isolation liquid in-process needle point rotation disturbance damaged the puncture position, improves the accuracy and the security of puncture.
In the description of the present application, it should be understood that the terms "head" and "tail" and "upper" and "lower" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or component to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present application.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and additions may be made to those skilled in the art without departing from the method of the present application, which modifications and additions are also to be considered as within the scope of the present application.
Claims (7)
1. The puncture needle for the difficult-position drainage, biopsy and thermal ablation circulating isolation liquid comprises a hollow outer sleeve and a needle core matched with the inner diameter of the hollow outer sleeve, wherein the head end of the needle core is a needle point; the tail end of the outer sleeve is provided with a needle handle limiting device which is detachably connected with the tail end of the outer sleeve; the two sides close to the tail end of the outer sleeve are respectively provided with a water inlet and a water outlet, a water inlet cavity and a water outlet cavity are arranged in the side wall of the outer sleeve, the head end of the outer sleeve is provided with a water inlet hole and a water outlet hole, the water inlet cavity and the water inlet hole are sequentially communicated, and the water outlet, the water outlet cavity and the water outlet hole are sequentially communicated; the head end of the outer sleeve is an arc blunt end; the needle core is provided with a needle core scale mark, and when the needle core scale mark is level with the tail end of the outer sleeve, the needle point is positioned in the arc blunt end; when the needle core scale mark is positioned at the lower side of the tail end of the outer sleeve, the needle point is positioned at the outer part of the arc blunt point.
2. The puncture needle for difficult site drainage, biopsy and thermal ablation cyclic spacer fluid according to claim 1, wherein a water inlet protective cap is arranged on the water inlet, and a water outlet protective cap is arranged on the water outlet.
3. The needle of claim 1, wherein the detachable connection is a threaded connection.
4. The puncture needle for difficult site drainage, biopsy and thermal ablation cyclic isolation liquid according to claim 3, wherein the needle handle limiting device is of a hollow cap structure, one end is closed, the other end is an open end, an internal thread is arranged at the open end, and an external thread matched with the internal thread is arranged on the tail end surface of the outer sleeve.
5. The puncture needle for difficult site drainage, biopsy and thermal ablation cyclic spacer fluid according to claim 1, wherein the water inlet and the water outlet are respectively arranged at two sides of the arc blunt point.
6. The needle of claim 1, wherein the side wall of the outer sleeve near the head end is an arc-shaped part, the diameter of the arc-shaped part is gradually reduced, and the radian of the arc-shaped part is 1-30 degrees.
7. The puncture needle for difficult site drainage, biopsy and thermal ablation cyclic isolation liquid according to any one of claims 1-6, wherein the bottom surface of the needle handle limiting device is provided with a magnetic cavity, a magnet capable of freely rotating is arranged in the magnetic cavity, a supporting shaft is arranged at the bottom surface of the magnetic cavity corresponding to the center position of the magnet, and a circle of outer sleeve scale marks are arranged at the adjacent positions of the tail end of the outer sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310854349.0A CN116807578A (en) | 2023-07-12 | 2023-07-12 | Puncture needle for difficult part drainage, biopsy and thermal ablation cyclic isolation liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310854349.0A CN116807578A (en) | 2023-07-12 | 2023-07-12 | Puncture needle for difficult part drainage, biopsy and thermal ablation cyclic isolation liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116807578A true CN116807578A (en) | 2023-09-29 |
Family
ID=88124003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310854349.0A Pending CN116807578A (en) | 2023-07-12 | 2023-07-12 | Puncture needle for difficult part drainage, biopsy and thermal ablation cyclic isolation liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116807578A (en) |
-
2023
- 2023-07-12 CN CN202310854349.0A patent/CN116807578A/en active Pending
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