Electrocoagulation needle for closing biopsy puncture channel
By designing an electrocoagulation needle for closing biopsy puncture channels, and utilizing a heating wire and a thermistor to achieve rapid hemostasis of the puncture channel, the problem of difficult-to-control bleeding at the puncture site is solved, providing efficient hemostasis and a simple operation method.
Patent Information
- Application Number
- CN202423047023.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-10
AI Technical Summary
During percutaneous biopsy, bleeding at the puncture site is difficult to control, and conventional surface pressure hemostasis has limited effectiveness. Furthermore, existing hemostatic materials may affect the patient's health.
Design an electrocoagulation needle for closing biopsy puncture channels, comprising a handle, needle body, heating wire, and thermistor. Hemostasis is achieved by rapidly heating the needle tip through the heating wire, and the heating effect is precisely controlled by detecting the temperature through the thermistor.
It achieves rapid and effective hemostasis through puncture channels, avoids adhesions after burning, is simple to operate, and reduces the impact on the patient's health.
Smart Images
Figure CN223773844U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of medical apparatus and instruments, concretely relates to a biopsy puncture channel closure uses electrocoagulation needle. BACKGROUND
[0002] Percutaneous biopsy is a common medical intervention surgery, mainly used in liver, lung, breast and other organs, percutaneous biopsy can directly collect the tissue sample of cancerous part for detection, so as to accurately diagnose the patient's condition.
[0003] In the percutaneous biopsy process, the common complication is bleeding at the puncture site, specifically, percutaneous biopsy creates a puncture channel between the skin and the target organ, when the biopsy sampling is completed and the biopsy needle is removed, due to the lack of effective tamponade hemostasis measures, the puncture site is prone to blood spatter, continuous bleeding and other situations, in clinical practice, body surface pressing is usually used to control bleeding, but this method only acts on the skin surface, cannot directly stop bleeding at the internal puncture channel, and needs a long time of pressing to achieve the purpose of hemostasis.
[0004] In addition, when performing puncture biopsy surgery, it is crucial to obtain sufficient biological samples for pathological analysis, the common biopsy needle usually has a tube diameter of 14G to 21G, which makes the diameter of the biopsy puncture channel relatively large, and only relying on conventional body surface pressing cannot effectively control the bleeding in the channel and promote healing.
[0005] Another hemostasis method is to fill the biopsy puncture channel with hemostatic material for plugging bleeding, but some patients may have abnormal phenomena due to the biocompatibility problem of the hemostatic material, affecting the health of the patient. UTILITY MODEL CONTENT
[0006] The utility model aims at overcoming one or more defects in the prior art, and provides a biopsy puncture channel closure uses electrocoagulation needle.
[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme, a biopsy puncture channel closure uses electrocoagulation needle, including handle, needle body, heating wire, thermistor;
[0008] The needle body is a metal needle body in the form of a circular tube, one end thereof is inserted into the handle, the other end is closed to form a needle head, the heating wire is arranged in the needle head, and the thermistor is in the form of a cylinder and is inserted into the needle body to detect the temperature of the needle head.
[0009] Preferably, the end of the thermistor is inserted into the needle head, and the heating wire is wound around the end and densely arranged.
[0010] Further preferably, the outer wall of the thermistor is provided with helical grooves for winding the heating wire.
[0011] Further preferably, a portion of the heating wire is embedded in the helical grooves, and another portion of the heating wire protrudes out of the helical grooves, and a gap is formed between the outer wall of the heating wire and the inner wall of the needle head.
[0012] Preferably, the heating wire is wound in a spring shape.
[0013] Further preferably, the end of the thermistor abuts against the heating wire.
[0014] Further preferably, the end of the thermistor is a gradually inwardly tapered truncated cone shape, which is inserted into and abuts against the heating wire.
[0015] Further preferably, the thermistor is located in front of the heating wire and abuts against the bottom wall of the needle head.
[0016] Further preferably, a heat insulation layer is provided between the thermistor and the heating wire, and the lead wire of the thermistor penetrates through the heat insulation layer and is led out backward.
[0017] Further preferably, the biopsy puncture channel closure coagulation needle further comprises a metal core rod, which is inserted into the needle body and abuts against the heating wire from the rear to compact the heating wire in a spring shape.
[0018] Further preferably, the metal core rod is provided with a central through hole for the lead wire to pass through.
[0019] Further preferably, the front end of the metal core rod is gradually inwardly tapered and inserted into the cavity formed by the helical winding of the heating wire, and the metal core rod is spaced apart from the heat insulation layer.
[0020] Further preferably, the front end of the metal core rod is in a cylindrical shape and fills the cavity formed by the helical winding of the heating wire, and the end of the metal core rod abuts against the heat insulation layer.
[0021] Further preferably, the outer wall of the metal core rod is provided with helical grooves for winding the heating wire.
[0022] Further preferably, a portion of the heating wire is embedded in the helical grooves, and another portion of the heating wire protrudes out of the helical grooves, and a gap is formed between the outer wall of the heating wire and the inner wall of the needle head.
[0023] Preferably, the outer wall of the needle head is provided with a heat-conducting coating.
[0024] Preferably, the handle comprises a shuttle-shaped shell, a heating control mainboard, and a battery, the shuttle-shaped shell has a cavity inside, one end of the shuttle-shaped shell is provided with a plug-in hole for the needle body to pass through, the plug-in hole is in communication with the cavity, the heating control mainboard and the battery are arranged in the shuttle-shaped shell, the heating control mainboard is connected with the heating wire, the thermistor and the battery, and the battery is used for supplying power to the heating control mainboard and the heating wire.
[0025] Further preferably, the heating control mainboard is provided with a control button, and the shell is provided with a pressable heating switch, and the heating switch is in abutment with the control button.
[0026] Compared with the prior art, the utility model has the following advantages due to the above technical scheme:
[0027] The biopsy puncture channel closure electrocoagulation needle provided by the utility model comprises a handle, a needle body, a heating wire and a thermistor, the needle body is a metal needle body in a round tube shape, one end of the needle body is inserted into the handle, the other end of the needle body is closed to form a needle head part, the heating wire is arranged in the needle head part, the thermistor is in a cylindrical shape and is inserted into the needle body, the needle head part can be quickly heated by the heating wire, the inner wall of the biopsy puncture channel can be burned and cauterized, thereby achieving hemostasis, the metal needle body has the characteristic of the round tube shape, so that the adhesion after burning and cauterizing can be avoided, the temperature of the needle head part can be detected by the thermistor, the temperature of the needle head part can be accurately controlled, the handle only needs to be held to realize heating electrocoagulation hemostasis and promote healing, relevant equipment does not need to be connected, the operation is simple and convenient, the hemostasis effect is good, and the influence on the health of the patient can be greatly reduced. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 It is a structural schematic view of the utility model embodiment one, for the convenience of observation, the needle head part is cut open.
[0029] Figure 2 It is Figure 1 It is a sectional view schematic view of the handle.
[0030] Figure 3 It is Figure 1 It is a local enlarged schematic view of A in the utility model embodiment.
[0031] Figure 4 It is a sectional enlarged schematic view of the needle head part of the utility model embodiment two.
[0032] Figure 5 It is a sectional enlarged schematic view of the needle head part of the utility model embodiment three.
[0033] Figure 6 It is a sectional enlarged schematic view of the needle head part of the utility model embodiment four.
[0034] Figure 7 is a cross-sectional enlarged view of the needle head of the embodiment five of the utility model.
[0035] Figure 8 is a cross-sectional enlarged view of the needle head of the embodiment six of the utility model.
[0036] Wherein: 10. handle;11. shuttle-shaped shell;111. cavity;112. heating switch;12. heating control mainboard;121. control button;13. battery;14. plug-in hole;20. needle body;21. needle head;30. heating wire;31. gap;40. thermistor;41. spiral groove;42. lead wire;50. thermal insulation layer;60. metal core rod;61. center through hole. DETAILED DESCRIPTION
[0037] The utility model will be further described in connection with the embodiments shown in the drawings.
[0038] Embodiment one
[0039] As Figures 1 to 3 shown, the utility model provides a biopsy puncture channel closure uses electrocoagulation needle, including handle 10, needle body 20, heating wire 30, thermistor 40, handle 10 includes shuttle-shaped shell 11, heating control mainboard 12, battery 13, and shuttle-shaped shell inside has the cavity 111, and one end of shuttle-shaped shell 11 is equipped with the plug-in hole 14 that needle body 20 passes through, and the plug-in hole 14 is connected with the cavity 111, and heating control mainboard 12 and battery 13 set up in shuttle-shaped shell 11, and heating control mainboard 12 is connected with heating wire 30, thermistor 40 and battery 13, and battery 13 is used to supply power to heating control mainboard 12 and heating wire 30, needle body 20 is the metal needle body that presents the circular tube, and its one end is inserted in handle 10, and the other end is closed and forms needle head 21, the outer wall of needle head 21 is equipped with heat-conducting coating (not shown in the drawing), heating wire 30 is located in needle head 21, thermistor 40 presents cylindrical and inserts in needle body 20 to detect the temperature of needle head 21.
[0040] The advantage that thus sets up is that, can utilize heating wire to carry out rapid heating to needle head, realizes the cauterization to biopsy puncture channel inner wall, carries out hemostasis, can utilize the circular tube state characteristic of metal needle body, avoids the adhesion after cauterization, can also detect the temperature of needle head through thermistor, realizes the accurate control to needle head temperature, only needs to hold handle to realize heating electrocoagulation hemostasis and promotes healing, need not access relevant equipment, and the operation is simple and convenient, and the hemostatic effect is good, can greatly reduce the influence to patient health.
[0041] To further improve the temperature control accuracy, in the embodiment, the end of the thermistor 40 is inserted into the needle head 21, the heating wire 30 is wound around the end and densely arranged, specifically, the outer wall of the thermistor 40 is provided with a spiral groove 41 for facilitating the winding of the heating wire 30, a part of the heating wire 30 is embedded in the spiral groove 41, and the other part protrudes out of the spiral groove 41, and the outer wall of the heating wire 30 has a gap 31 with the inner wall of the needle head 21 to accommodate the thermal expansion of the heating wire 30 and the thermistor 40.
[0042] In the embodiment, the heating control mainboard 12 is provided with a control button 121, the shell 11 is provided with a pressable heating switch 112, the heating switch 112 abuts against the control button 121, when the heating switch 112 is pressed, the control button 121 is turned on, the heating control mainboard 12 controls the battery 13 to be connected with the heating wire 30, so that the heating wire 30 generates heat, when the thermistor 40 detects that the temperature of the needle head 21 reaches the set temperature, the thermistor 40 sends a signal to the heating control mainboard 12, and the heating control mainboard 12 disconnects the battery 13 from the heating wire 30 according to the signal, so that the heating wire 30 no longer generates heat, and when the thermistor 40 detects that the temperature of the needle head 21 does not reach the set temperature, the signal is not sent.
[0043] The use process of the biopsy puncture channel closure electrocoagulation needle will be described below:
[0044] After percutaneous biopsy, the biopsy needle is taken out, the protective sleeve for the biopsy needle is left in the patient's body, and then the biopsy puncture channel closure electrocoagulation needle is inserted into the protective sleeve, at this time, the needle head end reaches the biopsy site, and then the heating switch on the handle is turned on, and after the heating set time or the heating temperature is reached, the protective sleeve and the biopsy puncture channel closure electrocoagulation needle are slowly taken out outward, the protective sleeve is taken out first, and the biopsy puncture channel closure electrocoagulation needle is taken out later, and in the taking-out process, the biopsy puncture channel through which the biopsy puncture channel closure electrocoagulation needle passes is burned by the needle head, and hemostasis is completed.
[0045] It should be noted that the outer diameter of the needle body of the biopsy puncture channel closure electrocoagulation needle needs to match the inner diameter of the biopsy puncture channel, in the embodiment, the outer diameter is between 0.7mm and 2mm, and at the same time, the length of the needle body of the biopsy puncture channel closure electrocoagulation needle also needs to be greater than the depth of the biopsy puncture channel, the set temperature of the needle head is between 50℃ and 120℃, and is specifically set according to the actual situation, in addition, the control button 121 can also be a multi-grade temperature adjustment button to facilitate temperature adjustment.
[0046] Embodiment two
[0047] Example two is basically the same as example one, except that in example two, the heating wire 30 is spirally wound in a spring shape, and the thermistor 40 is located behind the heating wire 30, and the front end of the thermistor 40 abuts against the heating wire 30, as shown in Figure 4 .
[0048] Example three
[0049] Example three is basically the same as example two, except that in example three, the end of the thermistor 40 is a gradually inwardly tapered headless conical shape, which is inserted into the heating wire 30 and abuts against it, as shown in Figure 5 .
[0050] Example four
[0051] Example four is basically the same as example two, except that in example four, the thermistor 40 is located in front of the heating wire 30 and abuts against the bottom wall of the needle head 21, and a heat insulation layer 50 is provided between the thermistor 40 and the heating wire 30, the lead wire 42 of the thermistor 40 penetrates through the heat insulation layer 50 and is led out backward, as shown in Figure 6 .
[0052] Further, the biopsy puncture channel closing electrocoagulation needle further comprises a metal core rod 60, which is inserted into the needle body 20 and abuts against the heating wire 30 from the rear to compact the heating wire 30 in a spring shape, and the metal core rod 60 is provided with a central through hole 61 for the lead wire 42 to pass through.
[0053] The advantage of such an arrangement is that the heating wire and the thermistor can be separated by the heat insulation layer, and the heat emitted by the heating wire is transmitted to the needle head through the needle body and the heat-conducting coating, the needle head is heated and its temperature is transmitted to the internal thermistor, thereby realizing real-time monitoring of the temperature of the needle body.
[0054] Example five
[0055] Example five is basically the same as example four, except that in example five, the front end of the metal core rod 60 is gradually tapered inwardly and inserted into the cavity formed by the spirally wound heating wire 30, and the metal core rod 60 is spaced apart from the heat insulation layer 50, as shown in Figure 7 .
[0056] Example six
[0057] Example six is basically the same as example five, except that in example six, the front end of the metal core rod 60 is cylindrical and fills the cavity formed by the spirally wound heating wire 30, and the end of the metal core rod 60 abuts against the heat insulation layer 50, as shown in Figure 8 .
[0058] Further, the outer wall of the metal mandrel 60 is provided with a spiral groove 41 for winding the heating wire 30, a part of the heating wire 30 is embedded in the spiral groove 41, and another part protrudes out of the spiral groove 41, and the outer wall of the heating wire 30 has a gap 31 with the inner wall of the needle head 21.
[0059] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.
Claims
1. An electrocoagulation needle for closing a biopsy puncture channel, comprising a handle, a needle body, a heating wire, and a thermistor; Its features are: The needle body is a cylindrical metal needle body, with one end inserted into the handle and the other end closed to form a needle head. The heating wire is located inside the needle head, and the thermistor is cylindrical and inserted into the needle body to detect the temperature of the needle head.
2. The electrocoagulation needle for closing the biopsy puncture channel according to claim 1, characterized in that: The end of the thermistor is inserted into the needle head, and the heating wire is wound around the end and densely arranged.
3. The electrocoagulation needle for closing the biopsy puncture channel according to claim 2, characterized in that: The outer wall of the thermistor has a spiral groove to facilitate the winding of the heating wire.
4. The electrocoagulation needle for closing the biopsy puncture channel according to claim 3, characterized in that: A portion of the heating wire is embedded in the spiral groove, while another portion protrudes out of the spiral groove. There is a gap between the outer wall of the heating wire and the inner wall of the needle head.
5. The electrocoagulation needle for closing the biopsy puncture channel according to claim 1, characterized in that: The heating wire is spirally wound in a spring-like shape.
6. The electrocoagulation needle for closing the biopsy puncture channel according to claim 5, characterized in that: The end of the thermistor is pressed against the heating wire.
7. The electrocoagulation needle for closing the biopsy puncture channel according to claim 5, characterized in that: The end of the thermistor is a tapered cone that gradually tapers inward, and this end is inserted into and pressed against the heating wire.
8. The electrocoagulation needle for closing the biopsy puncture channel according to claim 5, characterized in that: The thermistor is located in front of the heating wire and abuts against the bottom wall of the needle head.
9. The electrocoagulation needle for closing the biopsy puncture channel according to claim 8, characterized in that: A heat insulation layer is provided between the thermistor and the heating wire, and the lead wire of the thermistor passes through the heat insulation layer and extends backward.
10. The electrocoagulation needle for closing the biopsy puncture channel according to claim 9, characterized in that: The electrocoagulation needle for closing the biopsy puncture channel also includes a metal core rod, which is inserted into the needle body and presses against the heating wire from the rear to compress the spring-shaped heating wire.
11. The electrocoagulation needle for closing the biopsy puncture channel according to claim 10, characterized in that: The metal core rod has a central through hole through which the lead wire passes.
12. The electrocoagulation needle for closing the biopsy puncture channel according to claim 10, characterized in that: The front end of the metal core rod gradually tapers inward and is inserted into the cavity formed by the spiral winding of the heating wire, with the metal core rod spaced apart from the heat insulation layer.
13. The electrocoagulation needle for closing the biopsy puncture channel according to claim 10, characterized in that: The front end of the metal core rod is cylindrical and fills the cavity formed by the spiral winding of the heating wire, and the end of the metal core rod abuts against the heat insulation layer.
14. The electrocoagulation needle for closing the biopsy puncture channel according to claim 13, characterized in that: The outer wall of the metal core rod has a spiral groove to facilitate the winding of the heating wire.
15. The electrocoagulation needle for closing the biopsy puncture channel according to claim 14, characterized in that: A portion of the heating wire is embedded in the spiral groove, while another portion protrudes out of the spiral groove. There is a gap between the outer wall of the heating wire and the inner wall of the needle head.
16. The electrocoagulation needle for closing the biopsy puncture channel according to claim 1, characterized in that: The outer wall of the needle tip is provided with a thermally conductive coating.
17. The electrocoagulation needle for closing the biopsy puncture channel according to claim 1, characterized in that: The handle includes a spindle-shaped housing, a heating control main board, and a battery. The spindle-shaped housing has a cavity inside, and one end of the spindle-shaped housing is provided with an insertion hole for the needle to pass through. The insertion hole is connected to the cavity. The heating control main board and the battery are disposed inside the spindle-shaped housing. The heating control main board is connected to the heating wire, the thermistor, and the battery. The battery is used to supply power to the heating control main board and the heating wire.
18. The electrocoagulation needle for closing the biopsy puncture channel according to claim 17, characterized in that: The heating control main board is equipped with a control button, and the housing is equipped with a pressable heating switch, which abuts against the control button.