CN211131050U - Catheter device for measuring intracranial pressure - Google Patents
Catheter device for measuring intracranial pressure Download PDFInfo
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- CN211131050U CN211131050U CN201921618293.4U CN201921618293U CN211131050U CN 211131050 U CN211131050 U CN 211131050U CN 201921618293 U CN201921618293 U CN 201921618293U CN 211131050 U CN211131050 U CN 211131050U
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- intracranial pressure
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- water injection
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Abstract
The utility model provides a catheter device for intracranial pressure survey, include: the guide pipe is a closed pipeline with two closed ends, and liquid is filled in the closed pipeline; the periphery of the proximal part of the catheter is tightly wrapped with a sealing membrane to form a sealing bag, a plurality of first side holes are arranged at intervals on the periphery of the head end of the proximal part of the catheter, and the first side holes are communicated with the catheter and the sealing bag; a metal introducer needle, the non-tip of which is used to connect the tip of the distal portion of the catheter; the adapter, for three way adapter, the first port of adapter is the cavity needle appearance, and cavity needle appearance side is equipped with the second side opening, and the second port of adapter is equipped with the connector, and the connector is used for connecting baroreceptor, and baroreceptor passes through the wire and shows the instrument, and the third port of adapter connects for the water injection. The utility model has low price and can be inserted into the brain tissue for measuring the intracranial pressure.
Description
Technical Field
The utility model relates to the technical field of intracranial pressure measuring devices, in particular to a catheter device for intracranial pressure measurement.
Background
At present, the contact-pressure type intracranial pressure probe which is applied in hospitals and has a miniature pressure sensor capable of being placed in the brain parenchyma and is arranged at the head end comprises two probes, one is a probe conducted by an optical fiber, and the other is a probe conducted by an electric signal. However, the two probes have complex manufacturing processes, high cost, are foreign products, are not made in China yet, have very high selling price, are more than 1 ten thousand in average per probe, are difficult to bear according to the current economic level of China, and increase the burden of society and medical insurance. The research and development of the intracranial pressure detection device which has low price and strong practicability and can be popularized in a large range in China is very necessary, and the product price can be reduced to a great extent. In addition, there is also a hydraulic type probe (patent No. 201420812564.0) which is only suitable for being placed on the surface of brain tissue due to its skull-like arc shape, cannot be inserted into the brain tissue, and requires a micro pressure chip device inside the probe.
SUMMERY OF THE UTILITY MODEL
The utility model provides a catheter device which is low in price and can be inserted into brain tissue and is used for measuring intracranial pressure.
A catheter device for intracranial pressure measurement, comprising:
the guide pipe is a pipeline with two closed ends, and the pipeline is filled with liquid;
the periphery of the proximal part of the catheter is tightly wrapped with a sealing membrane to form a sealing bag, a plurality of first side holes are arranged at intervals on the periphery of the catheter where the sealing membrane is arranged, and the first side holes are communicated with the catheter and the sealing bag;
a metal introducer needle having a non-tip for connection to a tip of a distal portion of a catheter;
the adapter, the adapter is three way adapter, the first port of adapter is cavity needle appearance, cavity needle appearance side is equipped with the second side opening, the second port of adapter is equipped with the connector, the connector is used for connecting baroreceptor, baroreceptor passes through the wire and connects display instrument, the third port of adapter connects for the water injection.
Preferably, the water inlet end of the water injection joint is sealed by a second sealing cap.
Preferably, the catheter is made of a medical silicone tube, the head end of the proximal part of the catheter is sealed by a medical silicone film, and the tail end of the distal part of the catheter is sealed by a first sealing cap;
the first sealing cap and the second sealing cap are both rubber sealing caps, the metal guide needle is made of stainless steel, and the sealing film is a silica gel sealing film;
the liquid is normal saline or sterile water.
Preferably, the catheter is connected with a drainage tube.
Preferably, the diameter of the catheter gradually increases from the proximal end to the distal end.
Preferably, the diameter of the head end of the proximal part of the catheter is 2-3 mm, and the diameter of the tail end of the distal part of the catheter is 3-5 mm.
Preferably, the tip of the metal introducer needle is triangular, and the non-tip of the metal introducer needle is in the shape of an open umbrella, and the open umbrella-shaped end is used for clamping the end of the distal part of the catheter.
Preferably, the flared umbrella-shaped end is provided with a clamping member for clamping the end of the distal part of the catheter;
the holder includes: the first connecting rods are uniformly arranged on the inner side surface of the opened umbrella shape at intervals, and the lower ends of the first connecting rods are close to the opening end of the opened umbrella shape; the lower extreme of head rod articulates there is the clamping jaw, the clamping jaw inboard is equipped with the draw-in groove, the terminal week side of the distal portion of pipe be equipped with the elasticity fixture block that the draw-in groove matches.
Preferably, be connected with the water injection pipe on the second sealed cap, shown water injection pipe is used for inside the three way connection head, a pipe means for intracranial pressure survey still includes water injection device, water injection device includes:
the water outlet of the water tank is connected with one end, far away from the second sealing cap, of the water injection pipe;
the suction water pump is connected to the water injection pipe;
the flow sensor and the flow velocity sensor are arranged at the water outlet of the water tank;
the electromagnetic valve is arranged on the water injection pipe;
the controller is respectively and electrically connected with the suction water pump, the flow sensor, the flow velocity sensor and the electromagnetic valve;
the water tank, the suction water pump, the flow sensor, the flow velocity sensor and the electromagnetic valve are all positioned outside the body of the person to be detected.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the connection structure of the catheter, the adapter, the baroreceptor and the display device of the present invention.
Fig. 3 is a schematic structural view of the connection between the catheter and the metal guide needle of the present invention.
Fig. 4 is a schematic structural view of an embodiment of the clamping member of the present invention.
Fig. 5 is a schematic structural view of an embodiment of the water injection device of the present invention.
In the figure: 1. a conduit; 11. a proximal portion of the catheter; 12. a distal portion of the catheter; 13. a first sealing cap; 14. a first side hole; 2. sealing the bag; 3. a metal guide pin; 31. a tip of a metal guide pin; 32. A non-pointed end of a metal guide pin; 4. an adapter; 41. a first port of the adapter; 42. a second port of the adapter; 43. a third port of the adapter; 44. a second sealing cap; 45. a connector; 46. needle sampling; 47. a second side hole; 5. a clamping member; 51. a first connecting rod; 52. a clamping jaw; 53. a card slot; 6. a water injection device; 61. a water tank; 62. a water injection pipe; 63. a suction water pump; 64. an electromagnetic valve; 7. a baroreceptor; 8. and displaying the instrument.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the various embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
An embodiment of the present invention provides a catheter device for intracranial pressure measurement, as shown in fig. 1-3, including:
the device comprises a conduit 1, wherein the conduit 1 is a pipeline with two closed ends, and the pipeline is filled with liquid;
a proximal portion of the catheter (the proximal portion of the catheter is a portion for performing pressure measurement on the brain using the catheter, such as measuring the pressure in the ventricle, the proximal portion of the catheter is a ventricular end portion, i.e., a portion for measuring the pressure in the ventricle, or when measuring the pressure of the brain parenchyma, the proximal portion of the catheter is a portion for performing pressure measurement on the ventricle, i.e., a portion for measuring the pressure in the brain tissue, the proximal portion of the catheter is a portion for performing pressure measurement on the brain tissue, the peripheral side of 11(<1cm long) is tightly wrapped with a sealing membrane (which is a thin sealing membrane for facilitating pressure conduction; the sealing membrane is tightly attached to the peripheral side of the proximal portion 11 of the catheter when no liquid is injected through the connector), so as to form a sealing bag 2 (as shown in fig. 1, the sealing bag can tightly wrap the peripheral side of the proximal portion (ventricular end portion or brain tissue end portion, a plurality of first side holes 14 are arranged at intervals on the periphery of the catheter 1 where the sealing membrane is arranged, and the first side holes 14 are communicated with the catheter 1 and the sealing bag 2 so as to inject liquid into the sealing bag 2 through the catheter 1; in summary, the catheter of the present invention is a closed pipe filled with liquid, preferably, the liquid is normal saline or sterile water.
A metal introducer needle 3 having a non-tip 32 for attachment to the end of the distal portion 12 of the catheter;
Preferably, the water inlet end of the water injection joint is sealed by a second sealing cap 44, the second sealing cap 44 is arranged to facilitate sealing of the water inlet end of the injection joint, the liquid can be injected into the adapter 4 and the conduit 1 through the second sealing cap 44, for example, the water injection pipe passes through the second sealing cap and is communicated with the three-way adapter, and the water injection into the water pipe is in the prior art or is injected through the existing injector, which is not described herein again;
the catheter 1 is made of a medical silicone tube, the head end of the proximal portion (ventricle (brain tissue) end portion) of the catheter is sealed by a medical silicone film, the tail end of the distal portion 12 of the catheter is sealed by a first sealing cap 13, and preferably, the first sealing cap 13 is fixedly connected with the distal portion 12 of the catheter, so that the first sealing cap 13 is prevented from falling off the catheter 1. The structure can better seal the two ends of the catheter 1, so that the catheter 1 is a closed pipeline with two closed ends and is communicated with the sealing bag only through the first side hole; the medical silica gel is a high molecular medical material with excellent performance, is used as a medical artificial material, has low cost, high practicability, difficult rejection and reaction, no harm to human bodies, good biocompatibility and no adhesion with capillary vessels of human bodies. Secondly, the silicon rubber product has the good medical characteristics of no color, no toxicity, high temperature resistance, oxidation resistance, softness, transparency and the like.
Preferably, the first sealing cap 13 and the second sealing cap 44 are both rubber sealing caps, the metal guide needle 3 is made of stainless steel (preferably medical stainless steel which is durable, good in corrosion resistance and non-toxic), and the sealing film is a silica gel sealing film. First sealed cap 13, second sealed cap 44 are the sealed cap of rubber, have sealed effectual advantage, and the most advanced of the needle appearance 46 of being convenient for passes first sealed cap 13, intercommunication pipe and adapter, and the sealed rubber cap has the advantage that still can keep the leakproofness through the needle puncture many times.
The working principle of the technical scheme is as follows:
the utility model discloses mainly make according to the principle of isobaric conduction of liquid, during the use, at first implant 2 ~ 3 centimeters below the person's that awaits measuring brain cortex with the pipe 1 that inside is full of liquid, then with the terminal of the distal part 12 of the non-most end 32 connection pipe of metal guide needle (see figure 2), stab the hole and draw (stab the hole and draw by the most advanced 31 of metal guide needle through the puncture of subcutaneous tunnel) to the terminal of the distal part 12 of pipe outside being located the person's that awaits measuring scalp in the subcutaneous tunnel of percutaneous, thereby be convenient for connect three way adapter, preferably, can dismantle metal guide needle from the pipe after drawing the terminal of the distal part 12 of pipe to be located the person's that awaits measuring scalp, be convenient for connect three way adapter (three way adapter also is located the person's that awaits measuring scalp;
then, the tip of the needle sample 46 of the three-way adapter 4 is penetrated into the end of the catheter 1 through the first sealing cap 13, the connector 45 of the three-way adapter 4 is connected with a pressure sensor (a monitor apparatus is in stock), and the pressure sensor 7 transmits a pressure electric signal to the display apparatus 8 through a lead; see fig. 3 for this scheme;
during detection, about one milliliter of the same liquid is injected into the second sealing cap end of the adapter 4, so that the sealing bag 2 wrapping the peripheral side of the catheter 1 is expanded, the sealing bag 2 is tightly attached to the brain tissue, and the pressure of the brain tissue is transmitted to the pressure sensor through the sealing bag 2, the sealing bag 2 and the liquid in the catheter 1; the intracranial pressure can be measured by adjusting 0 by the display device 8.
The beneficial effects of the above technical scheme are: 1. the utility model discloses catheter means utilizes the isobaric conduction principle of liquid to make, and it can monitor in the brain parenchyma and the intracranial pressure change in the ventricle, the utility model discloses compare with the probe that patent 201420812564.0 discloses, can insert the brain tissue, be convenient for accurate survey intracranial pressure, the utility model discloses not seen in the past has the same device. 2. The device can be connected with various pressure sensors by replacing the connector, and is applicable to various machines. 3. Because the conduit has the function of transmitting the liquid pressure, a pressure chip is not required to be arranged in the conduit, thereby reducing the cost and simplifying the process. 4. The catheter device is simple to manufacture, strong in practicability, low in cost (price), wide in application prospect and suitable for popularization in vast primary hospitals in China.
In one embodiment, a drainage tube is connected to the catheter 1.
The working principle and the beneficial effects of the technical scheme are as follows: if the ventricular fluid drainage is needed, a (channel) drainage tube can be additionally connected outside the sealing catheter at any time for ventricular fluid drainage.
In one embodiment, the catheter 1 is of increasing diameter from the proximal end to the distal end.
The working principle and the beneficial effects of the technical scheme are as follows: the technical scheme is convenient for connecting the non-needle end of the metal guide needle 3 with the tail end of the distal end part 12 of the catheter, and the guide needle 1 is driven to be led out by another puncture hole of the subcutaneous tunnel.
In one embodiment, the proximal portion 11 of the catheter has a tip diameter of 2-3 mm and the distal portion 12 of the catheter has a tip diameter of 3-5 mm.
The working principle and the beneficial effects of the technical scheme are as follows: the above dimensions facilitate the extraction of the catheter 1 through the subcutaneous tunnel.
In one embodiment, the tip 31 of the metal introducer needle is triangular (i.e., trigonal pyramid, with triangular lateral sides) and the non-tip 32 of the metal introducer needle is in the form of an open umbrella that grips the tip of the distal section 12 of the catheter.
The working principle and the beneficial effects of the technical scheme are as follows: the triangular shape of the tip 31 of the metal introducer needle facilitates the percutaneous tunneling of the tip 31 of the metal introducer needle, and the non-tip 32 of the metal introducer needle has an open umbrella shape for gripping the tip of the distal portion 12 of the catheter to facilitate the attachment of the metal introducer needle 3 to the catheter 1.
In one embodiment, the flared umbrella-shaped tip is provided with a gripping member 5, said gripping member 5 being adapted to grip the tip of the distal portion 12 of the catheter;
as shown in fig. 4, the holder 5 includes: the first connecting rods 51 are uniformly arranged on the inner side surface of the opened umbrella shape at intervals, and the lower ends of the first connecting rods 51 are close to the opened end of the opened umbrella shape; the lower end of the first connecting rod 51 is hinged (hinged through a connecting shaft as shown in fig. 2) with a clamping jaw 52, the inner side of the clamping jaw 52 is provided with a clamping groove 53, and the periphery of the end of the distal end part 12 of the catheter is provided with an elastic clamping block matched with the clamping groove 53.
The working principle and the beneficial effects of the technical scheme are as follows: the clamping piece 5 has a simple structure, and is convenient for connecting and disassembling the catheter 1 and the metal guide needle 3 through the clamping piece 5.
In one embodiment, as shown in fig. 5, a water injection tube is connected to the second sealing cap 44, the water injection tube 62 is used inside a three-way adapter, the catheter device for intracranial pressure measurement further comprises a water injection device 6 (located outside the brain and can be correspondingly located in the operating room), the water injection device 6 comprises:
the water outlet of the water tank 61 is connected with one end, far away from the second sealing cap, of the water injection pipe 62;
a suction water pump 63 connected to the water injection pipe 62;
the flow sensor and the flow velocity sensor are arranged at the water outlet of the water tank 61;
an electromagnetic valve 64 provided on the water injection pipe 62;
the controller is respectively and electrically connected with the suction water pump, the flow sensor, the flow velocity sensor and the electromagnetic valve 64;
the water tank 61, the suction water pump 63, the flow sensor, the flow velocity sensor and the electromagnetic valve 64 are all positioned outside the body of the person to be detected. Preferably, the controller can adopt an SPC-STW-26A1 model or a C51 singlechip, the model of the electromagnetic valve can be 2W025-06, the flow sensor can be a Sehenger pulse signal output water flow sensor SEN-HZ21WA, the model of the flow rate sensor can be QVE1901, and the water pump can be a miniature water pump of a DC30 model.
The working principle and the beneficial effects of the technical scheme are as follows: when water is required to be filled, the controller controls the suction water pump 63 and the electromagnetic valve 64 to work, water in the water tank 61 is pumped into the three-way adapter through the water injection pipe 62 and the water injection connector and enters the guide pipe 1 through the three-way adapter 4, meanwhile, the controller controls the flow sensor and the flow velocity sensor to work, the flow sensor is used for collecting liquid flow information of the water outlet of the water tank 61 and transmitting the liquid flow information to the controller, the controller is preset with a flow standard value, when the flow value collected by the flow sensor reaches the flow standard value, the controller controls the suction water pump 63, the flow sensor and the flow velocity sensor to stop working, the flow velocity sensor is used for collecting water flow velocity information of the water outlet of the water tank 61 and transmitting the water flow velocity information to the controller, the controller is provided with a flow velocity range standard value, the controller adjusts the current of, avoid the liquid flow and the too big harm to the human body of velocity of flow.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A catheter device for intracranial pressure measurement, comprising:
the device comprises a guide pipe (1), wherein the guide pipe (1) is a pipeline with two closed ends, and liquid is filled in the pipeline;
the periphery of the proximal part (11) of the catheter is tightly wrapped with a sealing membrane to form a sealing bag (2), a plurality of first side holes (14) are arranged on the periphery of the catheter (1) where the sealing membrane is arranged at intervals, and the first side holes (14) are communicated with the catheter (1) and the sealing bag (2);
a metallic introducer needle (3), the non-tip of the metallic introducer needle (3) being for connection to the tip of a distal portion (12) of a catheter;
adapter (4), adapter (4) are three way adapter, the first port (41) of adapter is cavity needle appearance (46), cavity needle appearance (46) side is equipped with second side hole (47), the second port (42) of adapter is equipped with connector (45), connector (45) are used for connecting baroreceptor (7), baroreceptor passes through the wire and connects display instrument (8), the third port (43) of adapter connect for the water injection.
2. A catheter device for intracranial pressure measurement as recited in claim 1, wherein,
the water inlet end of the water injection joint is sealed by a second sealing cap (44).
3. A catheter device for intracranial pressure measurement as recited in claim 2, wherein,
the catheter (1) is made of a medical silicone tube, the head end of the proximal part (11) of the catheter is sealed by a medical silicone film, and the tail end of the distal part (12) of the catheter is sealed by a first sealing cap (13);
the first sealing cap (13) and the second sealing cap (44) are both rubber sealing caps, the metal guide needle (3) is made of stainless steel materials, and the sealing film is a silica gel sealing film;
the liquid is normal saline or sterile water.
4. A catheter device for intracranial pressure measurement as claimed in claim 1, wherein the catheter (1) has a drainage tube connected thereto.
5. A catheter device for intracranial pressure measurement as recited in claim 1, wherein,
the diameter of the catheter (1) is gradually increased from the proximal end to the distal end.
6. A catheter device for intracranial pressure measurement as claimed in claim 5, wherein the proximal portion (11) of the catheter has a tip diameter of 2-3 mm and the distal portion (12) of the catheter has a tip diameter of 3-5 mm.
7. A catheter device for intracranial pressure measurement as recited in claim 1, wherein,
the tip (31) of the metal guiding needle is triangular, the non-tip (32) of the metal guiding needle is in an open umbrella shape, and the open umbrella-shaped end is used for clamping the end of the distal part (12) of the catheter;
the open umbrella-shaped end is provided with a clamping piece (5), and the clamping piece (5) is used for clamping the end of a distal part (12) of the catheter;
the clamp (5) comprises: the first connecting rods (51) are uniformly arranged on the inner side surface of the opened umbrella shape at intervals, and the lower ends of the first connecting rods (51) are close to the opened end of the opened umbrella shape; the lower extreme of first connecting rod (51) articulates there is clamping jaw (52), clamping jaw (52) inboard is equipped with draw-in groove (53), the terminal week side of the distal end portion (12) of pipe be equipped with the elasticity fixture block that draw-in groove (53) match.
8. A catheter device for intracranial pressure measurement as claimed in claim 2, wherein a water injection tube (62) is connected to the second sealing cap (44), the water injection tube (62) being used inside the three-way joint, the catheter device for intracranial pressure measurement further comprising a water injection device (6), the water injection device (6) comprising:
the water outlet of the water tank (61) is connected with one end, far away from the second sealing cap (44), of the water injection pipe (62);
a suction water pump (63) connected to the water injection pipe (62);
the flow sensor and the flow velocity sensor are arranged at the water outlet of the water tank (61);
an electromagnetic valve (64) provided on the water injection pipe (62);
the controller is respectively and electrically connected with the suction water pump (63), the flow sensor, the flow velocity sensor and the electromagnetic valve (64);
the water tank (61), the suction water pump (63), the flow sensor, the flow velocity sensor and the electromagnetic valve (64) are all positioned outside the body of the person to be detected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921618293.4U CN211131050U (en) | 2019-09-26 | 2019-09-26 | Catheter device for measuring intracranial pressure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921618293.4U CN211131050U (en) | 2019-09-26 | 2019-09-26 | Catheter device for measuring intracranial pressure |
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| CN211131050U true CN211131050U (en) | 2020-07-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575155A (en) * | 2019-09-26 | 2019-12-17 | 北京市神经外科研究所 | Catheter device for measuring intracranial pressure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575155A (en) * | 2019-09-26 | 2019-12-17 | 北京市神经外科研究所 | Catheter device for measuring intracranial pressure |
| CN110575155B (en) * | 2019-09-26 | 2024-04-05 | 北京市神经外科研究所 | Catheter device for intracranial pressure measurement |
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