Catheter device capable of achieving positioning
By setting up an annular fixing ring and monitoring equipment in the catheter body, the problem of difficulty in accurately controlling depth when the catheter enters human organs is solved, and the precise positioning and safe operation of the catheter is achieved to ensure the effect of drug treatment and contrast.
Patent Information
- Application Number
- CN202422121178.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-30
AI Technical Summary
When existing medical catheters enter human organs, it is difficult to accurately control the depth position inside the organs, which affects the effect of drug perfusion treatment and contrast.
An annular fixing ring is installed in the front side end of the catheter body, a positioning metal ring is installed, and monitoring equipment is equipped. Through the cooperation of the metal ring and the limiting ring, it is positioned using B-ultrasound and other developing equipment. In extreme cases, the monitoring equipment emits a prompt sound to prevent the metal ring from falling off.
The precise positioning of the catheter in the human organs is achieved, ensuring the effective operation of drug perfusion and contrast fluid perfusion, and preventing the metal ring from falling off to cause unnecessary impact on the organs.
Smart Images
Figure CN223082077U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical supporting equipment, and in particular to a catheter device capable of realizing positioning. Background Art
[0002] A medical catheter is a device required for imaging and drug perfusion. The catheter is made of medical PVC or TPU material. In order to facilitate entry into the corresponding position in the human body, it has the characteristics of being easily bendable and having a certain strength performance. When the existing catheter enters the human organ, it generally relies on the doctor's experience in operation. Therefore, it is not easy to accurately control the appropriate depth position when entering the organ. If the depth of entering the human body organ is too small or too large, it may not achieve good subsequent drug treatment and imaging effects. Based on the above, it is particularly necessary to provide a catheter device that can accurately position when the catheter body enters the human organ. Utility Model Content
[0003] In order to overcome the drawbacks that when the existing medical catheter enters the human organ, it generally relies on the doctor's experience in operation, it is not easy to accurately control the appropriate depth position when entering the organ, and it will affect the drug perfusion treatment and imaging effect, the present invention provides a ring-shaped fixing ring arranged inside the front end of the catheter body, and a positioning metal ring is installed inside the fixing ring. The metal ring can be conveniently removed or installed according to needs before use. When the catheter body is inserted into the human body, the operating doctor can judge and effectively control the position of the catheter body entering the human organ according to the position of the metal ring shown by B-ultrasound or the like, which is beneficial to subsequent drug perfusion and contrast agent perfusion. There is also a monitoring device. In an extreme case, when the catheter body enters the human body and the metal ring just separates from the fixing ring by a certain distance, the prompting circuit of the monitoring device can emit a loud prompting sound to prompt the operating doctor not to continue inserting the catheter body, preventing the metal ring from continuing to enter the human organ after falling off and causing unnecessary impacts on the human organ. A catheter device capable of realizing positioning.
[0004] The technical solution adopted by the present invention to solve its technical problems is:
[0005] A catheter device capable of achieving positioning, including a catheter body, characterized in that it further has a metal ring and a monitoring device; there is an annular groove inside one side of the catheter body, the metal ring is located in the annular groove, the inner diameter of the annular groove is smaller than the outer diameter of the metal ring, and there are a front limiting ring and a rear limiting ring on each of the other side and the other side of the annular groove; one end of the inner side of the catheter body has a wire tube transversely, a wire is arranged in the wire tube, there are two metal sheets in front of one side end of the wire tube, one end of the wire is electrically connected to the two metal sheets respectively, and the metal sheets are located in front of the outer side of the rear limiting ring; the other end of the wire is electrically connected to the two wiring terminals of a power plug respectively; the monitoring device includes a storage battery, a charging socket, a power switch, a power socket, and a prompting circuit, and the prompting circuit, the storage battery, the charging socket, the power switch, and the power socket are installed in a component box; the storage battery is electrically connected to the two power input ends of the prompting circuit respectively, and the power plug is inserted into the power socket.
[0006] Further, the inner diameters of the front limiting ring and the rear limiting ring are smaller than the outer diameter of the metal ring.
[0007] Further, the two metal sheets are insulated from the inside of the wire tube and are insulated from each other.
[0008] Further, the rear end of the metal ring is in contact with and electrically connected to the two metal sheets respectively.
[0009] Further, the prompting circuit of the monitoring device includes a triggering sub-circuit and an alarm sub-circuit. The triggering sub-circuit includes a resistor, a relay, and an NPN triode, which are connected by circuit board wiring. One end of the power socket is connected to one end of the resistor, the other end of the resistor is connected to the base of the NPN triode, the collector of the NPN triode is connected to the negative power input end of the relay, and the positive power input end and the control power input end of the relay are connected to the other end of the power socket.
[0010] Further, the alarm sub-circuit of the prompting circuit of the monitoring device includes a resistor, a relay, an NPN triode, a buzzer, and an electrolytic capacitor, which are connected by circuit board wiring. One end of the first resistor is connected to the positive power input end and the control power input end of the relay, the other end of the first resistor is connected to one end of the second resistor and the positive electrode of the electrolytic capacitor, the other end of the second resistor is connected to the base of the NPN triode, the collector of the NPN triode is connected to the negative power input end of the relay, the normally closed contact end of the relay is connected to the positive power input end of the buzzer, the negative electrode of the electrolytic capacitor is connected to the base of the NPN triode and the negative power input end of the buzzer, and the normally closed contact end of the triggering sub-circuit is connected to one end of the first resistor, the positive power input end and the control power input end of the alarm sub-circuit.
[0011] The beneficial effects of the present invention are as follows: An annular fixing ring (annular groove) is provided inside the front end of the catheter body. A positioning metal ring is installed inside the fixing ring. The metal ring (metal circle) can be conveniently removed or installed before use according to needs. When the catheter body does not enter deep into the human organ and there is no imaging equipment such as B-ultrasound available on site, the metal ring can be removed. When the catheter body enters deep into the human organ and there is imaging equipment such as B-ultrasound available on site, the metal ring can be retained, and then the catheter body that has entered the organ can be positioned by B-ultrasound or the like. When the catheter body of the present invention penetrates into the human organ, the operating doctor can judge and effectively control the position of the front end of the catheter body entering the human organ according to the position of the metal ring shown by B-ultrasound or the like, which is beneficial to subsequent drug perfusion and contrast agent perfusion. In the monitoring device of the present invention, under normal circumstances, the rear side of the metal ring contacts the front ends of the two metal sheets, so that the trigger sub-circuit does not output power to enter the alarm sub-circuit and the buzzer does not sound. In extreme cases, when the catheter body enters the human organ and the metal ring just separates from the fixing ring by a certain distance (such as manufacturing quality defects of this catheter body), the buzzer can emit a loud prompt sound for a period of time to prompt the operating doctor not to continue inserting the catheter body, preventing unnecessary impacts on the human organ caused by the metal ring falling off and continuing to enter the human organ. The present invention overcomes the drawbacks that existing medical catheters generally rely on the experience of doctors when entering the human organ, it is not easy to accurately control the appropriate depth position entering the organ, and it will affect the drug perfusion treatment and contrast effect. Based on the above, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention will be further described below with reference to the drawings and embodiments.
[0013] Figure 1 is a schematic structural diagram of the present invention.
[0014] Figure 2 is a schematic partial structural diagram of the present invention.
[0015] Figure 3 is a circuit diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0016] Figure 1 、 2As shown in the figure, a catheter device capable of positioning includes a catheter body 3 (with certain flexibility and elasticity), a metal ring 1 (copper), and a monitoring device 2. There is an annular groove 301 with an annular distribution at the inner end of the left side of the catheter body 3. The metal ring 1 is located in the annular groove 301. The inner diameter of the annular groove 301 is slightly smaller than the outer diameter of the metal ring 1 (due to the certain flexibility and elasticity of the catheter body, the metal ring 1 can be effectively fixed). The left end and the right end of the annular groove 301 each have an annular front limiting ring 302 and a rear limiting ring 303 (hollow) integrally formed with the catheter body. Horizontally at the upper end of the inner side of the catheter body, there is an integrally formed wire tube 304 (the left side is located on the right side of the rear limiting ring). There is a wire 306 in the wire tube 304. Two small circular metal pieces 305 (copper, with an outer diameter of 1 mm) are fixedly installed by heating at a certain distance in front of the left end of the wire tube 304. The two wiring ends on the left part of the wire 306 and the right rear sides of the two metal pieces 305 are respectively connected by wires. The metal pieces 305 are located on the front outer side of the rear limiting ring 303 and are in a vertical plane from top to bottom with the front end of the rear limiting ring 303. The right side of the wire 306 is located at the right outer end of the catheter body 3, and the wire 306 is sealed with the inside of the wire tube 304. At the right outer end of the catheter body 3 where the wire 306 is located in the wire tube 304 of the catheter body, a power plug 4 is installed (the other end of the wire 306 and the two wiring ends of the power plug 4 are respectively connected by wires). The monitoring device 2 includes a storage battery 21, a charging socket 22, a power switch 23, a power socket 24, and a prompting circuit 25. The prompting circuit 25 is installed on a circuit board, and the circuit board, the storage battery 21, the charging socket 22, the power switch 23, and the power socket 24 are installed in a component box 26.
[0017] Figure 1 、 2 As shown in the figure, the inner diameters of the front limiting ring 302 and the rear limiting ring 303 are 1.5 mm smaller than the outer diameter of the metal ring 1. The two metal pieces 305 are isolated from the inside of the wire tube 304 and are insulated from each other.
[0018] Figure 3As shown, the battery G of the monitoring device is of the model 12V / 5Ah, the charging socket CZ is a coaxial power socket, the power switch S is a toggle power switch, and the power socket CZ1 is a coaxial power socket. The jacks of the charging socket CZ, the power socket CZ1, and the operating handle of the power switch S are respectively located outside three openings at the front end of the component box. The prompting circuit of the monitoring device includes a triggering sub-circuit and an alarm sub-circuit. The triggering sub-circuit includes a resistor R1, a relay K, and an NPN transistor Q1, which are connected by circuit board wiring. One end of the power socket CZ1 is connected to one end of the resistor R1, the other end of the resistor is connected to the base of the NPN transistor Q1, the collector of the NPN transistor Q1 is connected to the negative power input terminal of the relay K, and the positive power input terminal and the control power input terminal of the relay K are connected to the other end of the power socket CZ1. The alarm sub-circuit of the prompting circuit of the monitoring device includes resistors R2 and R3, a relay K1, an NPN transistor Q2, a buzzer B, and an electrolytic capacitor C, which are connected by circuit board wiring. One end of the first resistor R2 is connected to the positive power input terminal and the control power input terminal of the relay K1, the other end of the first resistor R2 is connected to one end of the second resistor R3 and the positive electrode of the electrolytic capacitor C, the other end of the second resistor R3 is connected to the base of the NPN transistor Q2, the collector of the NPN transistor Q2 is connected to the negative power input terminal of the relay K1, the normally closed contact terminal of the relay K1 is connected to the positive power input terminal of the buzzer B, the negative electrode of the electrolytic capacitor C is connected to the base of the NPN transistor Q2 and the negative power input terminal of the buzzer B, and the normally closed contact terminal of the relay K1 in the triggering sub-circuit is connected to one end of the first resistor R2, the positive power input terminal, and the control power input terminal of the alarm sub-circuit. The rear end of the metal ring M is in contact with and electrically connected to the two metal pieces T.
[0019] Figure 3 As shown, the two poles of the battery G and the two wiring terminals of the charging socket CZ are respectively electrically connected (when the battery G is out of power, the charging plug of an external power charger can be inserted into the charging socket CZ to charge the battery G). The positive pole of the battery G is electrically connected to one end of the power switch S, and the other end of the power switch S, the negative pole of the battery G, and the two power input terminals of the prompting circuit, the positive power input terminal of the relay K, and the emitter of the NPN transistor Q1 are respectively connected by wires; the power plug CT is inserted into the power socket CZ1.
[0020] Figure 1 、 2As shown in Figs. 3, in the front end of the catheter body 3 of the present invention, an annular fixing ring 301 (annular groove) is provided. A positioning metal ring 1 is installed in the fixing ring 301. Before use, the metal ring 1 can be conveniently removed or installed as needed. When the catheter body 3 enters the human organ to a small depth and there is no imaging equipment such as B-ultrasound on site, the metal ring 1 can be removed. When the catheter body 3 enters the human organ to a greater depth and there is imaging equipment such as B-ultrasound on site, the metal ring 1 can be retained, and then the B-ultrasound etc. can be used to position the catheter body 3 that has entered the organ. In the present invention, the inner diameters of the front limiting ring 302 and the rear limiting ring 303 are 1.5 mm smaller than the outer diameter of the metal ring 1, and the inner diameter of the annular groove is 0.5 mm smaller than the outer diameter of the metal ring 1 (the catheter body has a certain elasticity). Therefore, the metal ring 1 can be effectively fixed in the annular groove 301. Without quality problems, the metal ring 1 will not fall out of the annular groove 301. The rear end of the metal ring M will contact and be electrically connected to the left front sides of the two metal pieces T respectively. When the catheter body 3 of the present invention penetrates into the human organ, since the metal ring 1 can be imaged under B-ultrasound etc., the operating doctor can judge and effectively control the position of the front end of the catheter body 1 entering the human organ according to the position of the metal ring 1 shown on the B-ultrasound display screen etc., which is beneficial to subsequent drug perfusion and contrast agent perfusion.
[0021] Figure 1 、 2As shown in FIGS. 3, when the present invention needs to use the metal ring 1 for positioning and insert the catheter body 1 into a human organ (except for adding the metal ring, the lead-out tube, etc., the rest of the structure of the catheter body 1 of the present invention is exactly the same as that of the existing catheter, so the operation method and process of inserting the catheter body 1 into a human organ are exactly the same as those of the existing catheter body), the operating doctor inserts the power plug CT into the power socket CZ1. In this way, the two metal pieces T will be respectively connected to the positive power input terminal of the relay K and the other end of the resistor R1. After turning on the power switch S, the trigger sub-circuit is in the powered-on working state. In the present invention, under normal circumstances, the rear side of the metal ring M contacts the front side ends of the two metal pieces T. In this way, the positive electrode of the storage battery G will enter one end of the resistor R through one end of the power socket CZ1, one of the wiring terminals of the power plug T, one of the metal pieces T, the metal ring M, the other metal piece T, the other wiring terminal of the power plug CT, and the other end of the power socket CZ1, and then enter the base of the NPN triode Q1 through the other end of the resistor R. Then, the NPN triode Q1 conducts and its collector outputs a low level to enter the negative power input terminal of the relay K, and the relay K is powered on and attracted, and its control power input terminal and the normally closed contact terminal are opened. Since the positive power input terminal of the alarm sub-circuit is connected to the normally closed contact terminal of the relay K, under normal circumstances, when the metal ring M does not slip out from the front of the catheter body, the alarm sub-circuit will not be powered on and work. In the present invention, when the metal ring M does not contact the front sides of the two metal pieces T due to various reasons (the probability of a failure occurring in the present invention is not high, but in cases such as manufacturing defects in this catheter body or extreme situations, it is still possible to cause separation between the metal ring and the two metal pieces T), since the two metal pieces T are open, the positive power output by the storage battery G will no longer enter the resistor R1. The base of the NPN triode Q1 is cut off due to no power input. Furthermore, the relay K loses power and no longer attracts, and its control power input terminal and the normally closed contact terminal are closed. Since the normally closed contact terminal of the relay K is connected to the positive power input terminal of the alarm sub-circuit, when the metal ring M does not contact the front sides of the two metal pieces T, the alarm sub-circuit will be in the powered-on working state.
[0022] Figure 1 , 2, as shown in Figures 3, after the alarm sub - circuit is powered on and operates, the positive pole of the 12V power supply will step - down and limit the current through resistor R2 to charge the electrolytic capacitor C. In the first 5 seconds, when the electrolytic capacitor C is not fully charged, the voltage obtained by the NPN transistor Q2 through the voltage - reduction and current - limiting of resistors R3 and R2 is lower than 0.7V, and the NPN transistor Q2 is in the cut - off state. The relay K1 loses power and does not pull in, and its control power input terminal and normally - closed contact terminal are closed. Since the positive - pole power input terminal of the buzzer B is connected to the normally - closed contact terminal of the relay K1, within the first 5 seconds, the buzzer B will be powered on and emit a loud prompt sound, prompting the operating doctor that the distance between the metal ring M and the two metal sheets T has increased (it may be separated from the catheter body). After the operating doctor hears the prompt sound, the operating doctor can terminate the catheter body 1 from continuing to enter the human organ and use a fixture with an optical - fiber camera to take out the catheter body 1, preventing the metal ring M from continuing to enter the human organ after falling off and causing unnecessary impacts on the human organ, and preventing the fallen catheter body 1 from entering the organ too deeply, which brings trouble for subsequent taking out with a fixture with an optical - fiber camera. After the new - type alarm sub - circuit operates, the positive pole of the 12V power supply will step - down and limit the current through resistor R2 to charge the electrolytic capacitor C. After charging for 5 seconds, when the electrolytic capacitor C is fully charged, the voltage obtained by the NPN transistor Q2 through the voltage - reduction and current - limiting of resistors R3 and R2 is higher than 0.7V. Furthermore, the NPN transistor Q2 is in the conducting state, and its collector outputs a low level and enters the negative - pole power input terminal of the relay K1. The relay K1 is powered on and pulls in, and its control power input terminal and normally - closed contact terminal are open - circuited. Since the positive - pole power input terminal of the buzzer B is connected to the normally - closed contact terminal of the relay K1, after 5 seconds, the buzzer B loses power and no longer emits a prompt sound, preventing the buzzer B from continuously making a sound and causing unnecessary interference to the operator. After the new - type subsequently turns off the power switch S, all circuits lose power and stop operating. The resistance values of resistors R1, R2, and R3 are 470K, 1M, and 470K respectively; the specification of the electrolytic capacitor C is 4.7μF / 25V; the models of the NPN transistors Q1 and Q2 are 9013; the models of the relays K and K1 are DC4100; the buzzer B is an active continuous - sound micro - buzzer of model HNB09A12.
[0023] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to encompass all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.
[0024] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments understandable to those skilled in the art.
Claims
1. A catheter device capable of achieving positioning, comprising a catheter body, characterized in that It also has a metal ring and a monitoring device; there is an annular groove inside one side of the catheter body, the metal ring is located in the annular groove, the inner diameter of the annular groove is smaller than the outer diameter of the metal ring, and there are a front limiting ring and a rear limiting ring on each of the one side and the other side of the annular groove; one end of the inner side of the catheter body has a wire tube horizontally, there is a wire inside the wire tube, there are two metal pieces in front of one side end of the wire tube, one end of the wire is electrically connected to the two metal pieces respectively, and the metal pieces are located outside the front of one side of the rear limiting ring; The other end of the wire is electrically connected to the two wiring terminals of a power plug respectively; the monitoring device includes a storage battery, a charging socket, a power switch, a power socket, and a prompting circuit, and the prompting circuit, the storage battery, the charging socket, the power switch, and the power socket are installed in a component box; the storage battery is electrically connected to the two power input terminals of the prompting circuit respectively, and the power plug is inserted into the power socket.
2. The catheter device capable of achieving positioning according to claim 1, characterized in that, The inner diameters of the front limiting ring and the rear limiting ring are smaller than the outer diameter of the metal ring.
3. The catheter device capable of achieving positioning according to claim 1, characterized in that, The two metal pieces are isolated from the inside of the wire tube and insulated from each other.
4. A catheter device capable of achieving positioning according to claim 1, characterized in that, The rear end of the metal ring is in contact with the two metal pieces respectively and is electrically connected.
5. The catheter device capable of achieving positioning according to claim 1, characterized in that, The prompting circuit of the monitoring device includes a triggering sub-circuit and an alarming sub-circuit. The triggering sub-circuit includes a resistor, a relay, and an NPN triode, which are connected by circuit board wiring. One end of the power socket is connected to one end of the resistor, the other end of the resistor is connected to the base of the NPN triode, the collector of the NPN triode is connected to the negative power input terminal of the relay, and the positive power input terminal and the control power input terminal of the relay are connected to the other end of the power socket.
6. The catheter device capable of achieving positioning according to claim 5, characterized in that, The alarming sub-circuit of the prompting circuit of the monitoring device includes a resistor, a relay, an NPN triode, a buzzer, and an electrolytic capacitor, which are connected by circuit board wiring. One end of the first resistor is connected to the positive power input terminal and the control power input terminal of the relay, the other end of the first resistor is connected to one end of the second resistor and the positive electrode of the electrolytic capacitor, the other end of the second resistor is connected to the base of the NPN triode, the collector of the NPN triode is connected to the negative power input terminal of the relay, the normally closed contact terminal of the relay is connected to the positive power input terminal of the buzzer, the negative electrode of the electrolytic capacitor is connected to the base of the NPN triode and the negative power input terminal of the buzzer, and the normally closed contact terminal of the relay of the triggering sub-circuit is connected to one end of the first resistor, the positive power input terminal and the control power input terminal of the relay of the alarming sub-circuit.