Multipurpose cyst puncture device

Abstract

The multipurpose cyst puncture device comprises an inner needle and an outer sheath, the inner needle is arranged in the outer sheath, a needle tip of the inner needle penetrates out of a front end opening of the outer sheath, a side hole is formed in the end, close to the needle tip, of the sheath wall of the outer sheath, and an inner needle positioning assembly is arranged at a tail end opening of the outer sheath. The device can ensure safe, effective and smooth puncture of cystic lesions of various tissues and parts of a human body, complete suction of cyst fluid and injection treatment of a hardening agent, and is suitable for puncture and hardening treatment of benign cystic diseases of various human tissues.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a multi-purpose cyst puncture device. Background Art

[0002] At present, various cystic diseases of the human body are common (kidney cysts, liver cysts, ovarian cysts, etc.). For benign cystic lesions, cyst puncture, cyst fluid aspiration, and cyst wall hardening treatment with a sclerosing agent (anhydrous ethanol) can be effectively treated, and are minimally invasive and safe. However, there is currently no dedicated cyst puncture kit, and most of them use various types of non-dedicated puncture needles or trocars for puncture treatment. Non-dedicated needles have the following disadvantages during the puncture process: 1. After the cyst puncture is successful, the cyst fluid decreases with the aspiration of the cyst fluid, and the cyst wall gradually collapses. Since the puncture needle tip is sharp, it is easy to pierce the collapsed cyst wall, resulting in subsequent aspiration failure, and because the cyst collapses, it is difficult to continue positioning aspiration, which easily leads to treatment failure. 2. As the cyst fluid decreases, the cyst wall collapses, and the puncture needle tip adheres to the cyst wall, and the remaining cyst fluid cannot be completely aspirated, resulting in poor further hardening treatment effect (cyst fluid mixing affects the concentration of hardener). 3. When aspirating deep tissue, the cyst wall may collapse and the puncture needle may fall out of the cyst, resulting in puncture failure. 4. Too much hardener is injected, causing the hardener to flow out and damage surrounding tissues. Summary of the invention

[0003] In order to solve the above-mentioned problems, the purpose of the present invention is to provide a multi-purpose cyst puncture device, which can effectively avoid various unexpected situations during the above puncture process, ensure the safe, effective and smooth puncture of cystic lesions in various tissues and parts of the human body, complete aspiration of cystic fluid and injection treatment of sclerosing agents, and is suitable for the puncture and sclerotherapy of various benign cystic diseases of human tissues.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A multi-purpose cyst puncture device comprises an inner needle and an outer sheath, wherein the inner needle is placed inside the outer sheath and the needle tip of the inner needle passes through a front port of the outer sheath, a side hole is provided on the end of the sheath wall of the outer sheath near the needle tip, and an inner needle positioning assembly is provided at the end of the outer sheath.

[0006] More preferably, the inner needle positioning assembly includes a fixed base and a sealing cover, the fixed base is arranged at the end portion of the outer sheath, the sealing cover is detachably connected to the fixed base, the sealing cover covers the end opening of the outer sheath, the needle tail of the inner needle abuts against the sealing cover, and the sealing cover prevents relative sliding between the inner needle and the outer sheath during puncture, thereby ensuring that the inner needle and the outer sheath enter the cyst synchronously.

[0007] More preferably, the sheath wall at the front end of the outer sheath extends outwardly to form a duckbill-shaped protrusion, and the needle tip passes through the protrusion.

[0008] More preferably, the protrusion is composed of two symmetrically arranged protective sheets, and the top ends of the protective sheets are in an arc shape.

[0009] More preferably, the outer sheath is a metal outer sheath.

[0010] More preferably, a balloon is arranged around the outer wall of the outer sheath behind the side hole, a pipeline is arranged inside the sheath wall of the outer sheath, one end of the pipeline is connected to the balloon, the other end opens on the sheath wall and is connected to the first connecting tube, and the first connecting tube is provided with an injection valve.

[0011] More preferably, the inner needle positioning assembly includes a multi-way connecting tube, a self-sealing rubber plug and a control valve, the multi-way connecting tube includes a main tube and at least one branch tube, one end of the main tube is sealed and connected to the end portion of the outer sheath, and the other end is provided with the self-sealing rubber plug, the branch tube is provided between the self-sealing rubber plug and the end of the outer sheath, and the control valve is provided on the branch tube.

[0012] More preferably, the multi-way connecting tube includes two branch tubes, wherein the open end of one branch tube is connected to the negative pressure bottle, and the open end of the other branch tube is connected to the injection bottle.

[0013] More preferably, the outer sheath is a silicone outer sheath, and the front end of the outer sheath is a flat end opening.

[0014] The present invention has the following beneficial effects:

[0015] 1. The present invention completes puncture through the cooperation of the inner needle and the outer sheath, then pulls out the inner needle, and performs suction and sclerotherapy through the outer sheath, thereby preventing the inner needle from piercing the cyst wall and damaging the surrounding tissues, improving the safety of the treatment process, and effectively solving the problem of puncture and sclerotherapy of cystic lesions.

[0016] 2. The present invention provides side holes on the sheath wall of the outer sheath, increases the communication port between the outer sheath and the cystic cavity, and extends a duckbill-shaped protrusion at the front end of the outer sheath, which can avoid treatment failure caused by blockage, ensure complete suction of the cystic fluid, and improve the smoothness of the suction and injection process.

[0017] 3. The present invention arranges a balloon around the outer wall of the outer sheath, and expands the balloon by inflating air or injecting liquid into the balloon to prevent the outer sheath from detaching from the cyst and to block the puncture hole through the balloon to prevent the hardener from being injected outward and damaging the surrounding tissues.

[0018] 4. The puncture device of the present invention can also be used to treat complex cysts, and further examinations such as angiography can be performed by leaving an outer sheath in place.

[0019] 5. The present invention arranges a multi-way connecting tube, a self-sealing rubber plug and a control valve, and then uses them in combination with a negative pressure bottle and an injection bottle. The cyst fluid is sucked out by negative pressure and a hardener is injected. The dosage of the hardener is determined according to the negative pressure in the cyst cavity. Therefore, overflow will not occur due to excessive injection, making the cyst puncture and hardening treatment process safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional diagram of the outer sheath of the first embodiment of the present invention;

[0021] Figure 2 This is a front view of the outer sheath of Embodiment 1 of the present invention;

[0022] Figure 3 It is a front view of the outer sheath combined with the inner needle positioning assembly of the first embodiment of the present invention;

[0023] Figure 4 is an overall structural diagram of the first embodiment of the present invention;

[0024] Figure 5 This is a front view of the outer sheath of the second embodiment of the present invention;

[0025] Figure 6 for Figure 5 Right view

[0026] Figure 7 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention;

[0027] Figure 8 This is a schematic diagram of the overall structure of Embodiment 3 of the present invention;

[0028] Fig. 9 Schematic diagram of the overall structure of the third embodiment of the present invention after the inner needle is pulled out

[0029] Fig.10 This is a schematic diagram of the state after successful puncture in the third embodiment of the present invention;

[0030] Fig.11 This is a schematic diagram of the state of extracting liquid and injecting medicine in Example 3 of the present invention.

[0031] Description of reference numerals:

[0032] 10. Inner needle; 20. Outer sheath; 21. Sheath wall; 22. Front port; 23. Side hole; 24. Terminal port; 25. Raised portion; 251. Protective sheet; 26. Pipeline; 30. Inner needle positioning assembly; 31. Fixed base; 32. Sealing cap; 33. Multi-way connecting tube; 331. Main tube; 332. Branch tube; 34. Self-sealing rubber plug; 35. Control valve; 40. Balloon; 50. First connecting tube; 51. Injection valve; 60. Negative pressure bottle; 70. Injection bottle; 80. Cyst; 81. Cyst wall; 82. Cyst cavity. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0034] Embodiment 1

[0035] See also Figures 1 to 4 A multi-purpose cyst puncture device comprises an inner needle 10 and an outer sheath 20, wherein the inner needle 10 is placed in the outer sheath 20 and the needle tip of the inner needle 10 passes through the front port 22 of the outer sheath 20, a side hole 23 is provided at the end near the needle tip on the sheath wall 21 of the outer sheath 20, and an inner needle positioning assembly 30 is provided at the end port 24 of the outer sheath 20. The inner needle positioning assembly 30 can be optionally composed of a fixed base 31 and a sealing cover 32. The fixed base 31 is fixed to the end portion of the outer sheath 20, and the sealing cover 32 is detachably connected to the fixed base 31. The sealing cover 32 covers the end port 24 of the outer sheath 20, and the needle tail of the inner needle 10 abuts against the sealing cover 32. The sealing cover 32 prevents relative sliding between the inner needle 10 and the outer sheath 20 during the puncture process, thereby ensuring that the inner needle 10 and the outer sheath 20 enter the cyst 80 synchronously.

[0036] The inner needle 10 can be a hollow puncture needle, which is not only helpful for puncturing the cyst wall 81, but also can guide out part of the cyst fluid when the puncture is successful, so as to judge whether the puncture is successful. The inner needle 10 can preferably be a hollow needle with a 30° bevel at the tip, an outer diameter of 1 mm, and an inner diameter of 0.5 mm. The inner diameter of the outer sheath 20 can preferably be set to 1 mm and an outer diameter of 1.2 mm, but the size selection of the inner needle 10 and the outer sheath 20 is not limited thereto. The inner needle 10 can also be a solid needle.

[0037] The outer sheath 20 can be made of metal, plastic, silicone, etc. The puncture device using the metal sheath 20 is more suitable for one-time treatment of simple cysts 80 and puncture of cysts 80 in deep tissues, which can avoid the tension of surrounding muscle tissue after puncture to flatten the outer sheath 20. The metal sheath 20 can ensure that the cyst fluid aspiration and hardening process is smoother when treating deep tissue cysts 80.

[0038] When a metal outer sheath 20 is used, since the metal has a strong hardness, the front port 22 of the outer sheath 20 is improved to prevent the cyst 80 from collapsing after the cyst fluid is aspirated, and the front port 22 of the outer sheath 20 is attached to the cyst wall, affecting the smoothness of aspiration. Preferably, the sheath wall 21 of the front port 22 of the outer sheath 20 extends outwardly to form a duckbill-shaped protrusion 25, the top of the protrusion 25 is arc-shaped, and the needle tip passes through the protrusion 25. After the inner needle 10 and the outer sheath 20 penetrate the cyst 80 together, the inner needle 10 is withdrawn, and the arc-shaped top can not only prevent the front port 22 from sticking to the wall, but also will not damage the surrounding tissues, making the aspiration process smoother and safer. Preferably, the protrusion 25 is composed of two symmetrically arranged protective sheets 251, and the top of the protective sheet 251 is arc-shaped.

[0039] When puncturing the cyst 80, the cyst wall 81 is first pierced through the needle tip of the inner needle 10, and then the inner needle 10 and the outer sheath 20 are continuously and synchronously pushed into the cyst, the front part of the outer sheath 20 penetrates the cyst 80, the sealing cap 32 is removed, and the inner needle 10 is pulled out. When it is necessary to aspirate the cyst fluid, the syringe or the negative pressure bottle 60 is connected to the terminal port 24 of the outer sheath 20, and the cyst fluid is sucked into the outer sheath 20 through the front port 22 or the side hole 23, and then sucked into the syringe or the negative pressure bottle 60 through the outer sheath 20. When it is necessary to inject a hardener, the syringe containing the hardener is connected to the terminal port 24 of the outer sheath 20, and the drug flows through the outer sheath 20 and enters the cyst cavity 82 through the side hole 23 or the front port 22.

[0040] By using the puncture device of the present invention, after completing the puncture of the cyst 80, the inner needle 10 is withdrawn, and only the outer sheath 20 is kept in communication with the cyst 80, which can not only prevent the needle tip from damaging the surrounding tissue, but also prevent the cyst wall 81 from collapsing after the cyst fluid is reduced by suction, and the needle tip of the inner needle 10 from puncturing the cyst wall 81. At the same time, the outer sheath 20 of this embodiment is also provided with a side hole 23, through which the cyst fluid can be sucked. When the cyst fluid is reduced and the cyst wall 81 collapses, the duckbill-shaped protrusion 25 can further prevent the cyst wall 81 from completely adhering to the front port 22 of the outer sheath 20, ensuring a smooth suction process, thereby achieving complete suction of the cyst fluid and improving the subsequent hardening treatment effect.

[0041] For complex cysts 80, repeated suction of cyst fluid and injection of hardener are required during treatment, and the treatment process is time-consuming. In order to prevent the outer sheath 20 from slipping out of the cyst 80, the solution of embodiment 2 of the present invention may be preferred. At the same time, the solution of embodiment 2 is also applicable to treatment scenarios where a puncture device needs to be left in place, for example, further angiography examinations need to be performed with the aid of the puncture device.

[0042] Embodiment 2

[0043] See also Figures 5 to 7A multi-purpose cyst puncture device comprises an inner needle 10 and an outer sheath 20, wherein the inner needle 10 is placed in the outer sheath 20 and the needle tip of the inner needle 10 passes through the front port 22 of the outer sheath 20, a side hole 23 is provided on the sheath wall 21 of the outer sheath 20 at the end near the needle tip, and an inner needle positioning assembly 30 is provided at the terminal port 24 of the outer sheath 20. The inner needle positioning assembly 30 can be selected from a fixed base 31 and a sealing cover 32. The fixed base 31 is arranged at the terminal portion of the outer sheath 20, the sealing cover 32 is detachably connected to the fixed base 31, the sealing cover 32 covers the terminal port 24 of the outer sheath 20, the needle tail of the inner needle 10 abuts against the sealing cover 32, a balloon 40 is arranged around the outer wall of the outer sheath 20 behind the side hole 23, and the balloon 40 goes around the outer sheath 20. A pipeline 26 is provided inside the sheath wall 21 of the outer sheath 20, one end of the pipeline 26 is connected to the balloon 40, and the other end is opened on the sheath wall 21 and connected to the first connecting tube 50, and the first connecting tube 50 is provided with an air injection valve 51. When treating the cyst 80, gas or saline can be injected into the balloon 40 through the air injection valve 51, the purpose of which is to inflate the balloon 40, prevent the outer sheath 20 from being separated from the cyst 80 when the cyst fluid is reduced and the cyst wall 81 collapses, and play a role in stabilizing the connection between the outer sheath 20 and the cyst 80.

[0044] By slightly pulling the outer sheath 20 outward with external force, the inflated balloon 40 can also fit tightly against the puncture hole on the balloon wall 81, effectively preventing the injected hardener from flowing out during hardener therapy and avoiding damage to surrounding tissues.

[0045] When the outer sheath 20 is made of plastic silicone material, the front end of the outer sheath 20 can be a flat end opening.

[0046] Preferably, the inner needle 10 can be a hollow needle.

[0047] During the puncture, there is no gas or liquid in the balloon 40, which is attached to the outer wall of the outer sheath 20. The balloon 40 enters the cyst 80 together with the front end of the outer sheath 20. When the puncture is successful, remove the sealing cover 32 and pull out the inner needle 10. The balloon 40 is filled with gas or sterile saline through the pipeline 26 through the gas injection valve 51, and the balloon 40 expands, which can effectively prevent the outer sheath 20 from falling out, ensuring that the suction of cyst fluid and the sclerotherapy process are completed safely and smoothly. When the treatment is completed, the injected gas or sterile saline can be sucked out by inserting a syringe into the gas injection valve 51. After completion, the outer sheath 20 can be pulled out.

[0048] Embodiment 3

[0049] Since the cysts 80 vary in size, there is no uniform standard for the amount of hardener to be injected. It is generally determined based on experience or estimated based on experience, and overdose may occur. In order to further rationalize the amount of hardener injected, this embodiment provides a solution that can spontaneously control the amount of hardener injected through the negative pressure or low pressure generated after cyst fluid aspiration, thereby avoiding excessive outflow of hardener and damage to surrounding tissues.

[0050] See also Figure 8 and Fig. 9 A multi-purpose cyst puncture device comprises an inner needle 10 and an outer sheath 20, wherein the inner needle 10 is placed in the outer sheath 20 and the needle tip of the inner needle 10 passes through the front port 22 of the outer sheath 20, a side hole 23 is provided at the end near the needle tip on the sheath wall 21 of the outer sheath 20, and an inner needle positioning assembly 30 is provided at the end port 24 of the outer sheath 20. The inner needle positioning assembly 30 comprises a multi-way connecting tube 33, a self-sealing rubber plug 34 and a control valve 35. The multi-way connecting tube 33 comprises a main tube 331 and at least one branch tube 332, one end of the main tube 331 is sealedly connected to the end portion of the outer sheath 20, and the end of the other end is provided with the self-sealing rubber plug 34, the end of the inner needle 10 passes through the self-sealing rubber plug 34 from the inside to the outside, the branch tube 332 is provided between the self-sealing rubber plug 34 and the end of the outer sheath 20, and the control valve 35 is provided on the branch tube 332.

[0051] Preferably, the multi-way connecting tube 33 of this embodiment includes two branch tubes 332, wherein the open end of one branch tube 332 is connected to the negative pressure bottle 60, and the open end of the other branch tube 332 is connected to the injection bottle 70. When the multi-way connecting tube 33 includes only one branch tube 332, the negative pressure bottle 60 and the injection bottle 70 can be switched by closing the control valve 35.

[0052] Preferably, a balloon 40 is arranged around the outer wall of the outer sheath 20 behind the side hole 23, and the balloon 40 surrounds the outer sheath 20. A pipeline 26 is arranged inside the sheath wall 21 of the outer sheath 20, one end of the pipeline 26 is connected to the balloon 40, and the other end opens on the sheath wall 21 and is connected to the first connecting tube 50, and the first connecting tube 50 is provided with an injection valve 51.

[0053] Preferably, the inner needle 10 is a solid needle.

[0054] See also Fig.10 After the inner needle 10 and the outer sheath 20 have completed the puncture and the balloon 40 has also entered the cyst 80. Fig.11, the gas or liquid is filled into the balloon 40 through the pipeline 26 through the gas injection valve 51, the balloon 40 expands, and the outer sheath 20 is slightly pulled outward by external force, so that the inflated balloon 40 is closely fitted with the puncture hole on the cyst wall 81, which further strengthens the sealing of the puncture hole and prevents pressure release in the cyst. The outer sheath 20 located outside the human body can be clamped horizontally against the surface of the human skin by a clip to clamp the outer sheath 20 in the outward pulling state, so that the outer sheath 20 maintains the outward pulling force, so that the balloon 40 maintains the state of sealing the puncture hole. At this time, some cystic fluid has entered the outer sheath 20, and then the physical inner needle 10 is withdrawn. Due to the use of the self-sealing rubber plug 34, it has good sealing performance. Therefore, the withdrawal of the inner needle 10 will not reduce the internal pressure of the cyst 80. A negative pressure bottle 60 is connected to one of the straight tubes, and a medicine injection bottle 70 is connected to the other branch tube 332. The control valve 35 on the branch tube 332 connected to the negative pressure bottle 60 is opened first. Under the negative pressure in the bottle, the cyst fluid quickly flows into the negative pressure bottle 60 through the outer sheath 20. Then the valve is closed, and the control valve 35 on the branch tube 332 connected to the medicine injection bottle 70 is opened. Since the cyst cavity 82 is in a low pressure state, the hardener is injected into the cyst cavity 82 through the pressure difference. The complete suction of the cyst fluid and the hardening of the cyst wall 81 can be completed by repeated negative pressure suction and hardener injection.

[0055] In the third embodiment, the injection amount of the hardener is determined according to the negative pressure in the cyst cavity 82. Therefore, there will be no overflow due to excessive injection, and the cyst puncture and hardening treatment process is safer.

[0056] The present invention provides a multi-purpose cyst puncture device. The inner needle 10 assists the outer sheath 20 to complete the puncture, and then the inner needle 10 is withdrawn. The cyst fluid is sucked and the hardening treatment with the hardener is completed through the outer sheath 20. This can avoid the occurrence of the puncture needle dislocation, the inability to completely suck the cyst fluid, the hardening failure, the damage to the surrounding tissue caused by the external injection of the hardener, etc., which occur during the puncture treatment of non-dedicated cyst puncture needles. The present invention can ensure that the puncture and hardening treatment of cystic lesions in various tissues and parts of the human body are safe, effective, and smooth. For complex cysts, the outer sheath 20 can be retained for further examination such as angiography, which is more convenient to use.

[0057] The above description is only a specific implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-purpose cyst puncture device, characterized in that: It comprises an inner needle and an outer sheath, wherein the inner needle is placed inside the outer sheath and the needle tip of the inner needle passes through the front port of the outer sheath, a side hole is arranged on the end of the sheath wall of the outer sheath near the needle tip, and an inner needle positioning assembly is arranged at the end port of the outer sheath.

2. A multi-purpose cyst puncture device according to claim 1, characterized in that: The inner needle positioning assembly includes a fixed base and a sealing cover, wherein the fixed base is arranged at the end portion of the outer sheath, the sealing cover is detachably connected to the fixed base, the sealing cover covers the end opening of the outer sheath, and the needle tail of the inner needle abuts against the sealing cover.

3. A multi-purpose cyst puncture device according to claim 1 or 2, characterized in that: The sheath wall at the front end of the outer sheath extends outwardly to form a duckbill-shaped protrusion, and the needle tip passes through the protrusion.

4. A multi-purpose cyst puncture device according to claim 2, characterized in that: The raised portion is composed of two symmetrically arranged protective sheets, and the top ends of the protective sheets are in an arc shape.

5. A multi-purpose cyst puncture device according to claim 3, characterized in that: The outer sheath is a metal outer sheath.

6. A multi-purpose cyst puncture device according to claim 1, characterized in that: A balloon is arranged around the outer wall of the outer sheath behind the side hole, and a pipeline is arranged inside the sheath wall of the outer sheath. One end of the pipeline is connected to the balloon, and the other end opens on the sheath wall and is connected to the first connecting tube. The first connecting tube is provided with an air injection valve.

7. A multi-purpose cyst puncture device according to claim 6, characterized in that: The inner needle positioning assembly includes a multi-way connecting tube, a self-sealing rubber plug and a control valve. The end of the inner needle passes through the self-sealing rubber plug from the inside to the outside. The multi-way connecting tube includes a main tube and at least one branch tube. One end of the main tube is sealed and connected to the end of the outer sheath, and the other end is provided with the self-sealing rubber plug. The branch tube is arranged between the self-sealing rubber plug and the end of the outer sheath, and the control valve is provided on the branch tube.

8. A multi-purpose cyst puncture device according to claim 7, characterized in that: The multi-way connecting tube comprises two branch tubes, wherein the opening end of one branch tube is connected to the negative pressure bottle, and the opening end of the other branch tube is connected to the medicine injection bottle.

9. A multi-purpose cyst puncture device according to claim 1, 2 or 6, characterized in that: The outer sheath is a silicone outer sheath, and the front end of the outer sheath is a flat end opening.

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