CN219614694U - Guide wire of interventional touch sensor - Google Patents

Abstract

The utility model discloses an interventional touch sensor guide wire, and relates to the technical field of minimally invasive vascular interventional operations. The utility model comprises a guide core (1), and is characterized in that the bottom of the guide core (1) is fixedly connected with a guide head (2), a spiral piece is arranged on the outer side of the guide core (1), the lower end of the spiral piece is connected with the guide head (2), a first sensor placing part (6) is connected onto the spiral piece, a sealing cavity is formed in the first sensor placing part (6), and a first pressure chip (10) for detecting the touch force of the guide head (2) and the external pressure of the sealing cavity is arranged in the first sensor placing part (6). The first pressure chip 10 of the present utility model can monitor the pressure acting on the pressure sensitive deformable member, which pressure = touch pressure + ambient pressure outside the sealed cavity (i.e. blood pressure). When in use, the touch pressure value can be obtained by being matched with a monitoring component for monitoring the ambient pressure outside the sealed cavity.

Description

Guide wire of interventional touch sensor

Technical Field

The utility model relates to the technical field of minimally invasive vascular interventional procedures, in particular to an interventional touch sensor guide wire.

Background

Compared with the traditional diseases, the cardiovascular and cerebrovascular diseases have the characteristics of high morbidity, high morbidity speed, high treatment difficulty and the like, and because the cardiovascular and cerebrovascular diseases are positioned at special morbidity positions, the cardiovascular and cerebrovascular diseases are usually treated by adopting vascular intervention minimally invasive surgery, and the interventional guide wire is a part arranged on a medical robot.

The current pan-vascular intervention room operation robot is in the self-propelled intervention type guide wire for monitoring or medical treatment in-process, and the guide wire head can collide the vascular wall, and the guide wire head can be bent at this moment, but because no sensor that can monitor the state that the guide wire head touches the vascular wall or the organ wall, the medical robot can continue to push the guide wire to advance, and under the condition, the vascular wall can be continuously exerted with pressure by the guide wire, and when the pressure is great, serious people can cause serious injury to the vascular wall or the organ wall, thereby threatening the life health of patients. Meanwhile, in the diagnosis and treatment process, doctors also need to continuously monitor pressure parameters in blood vessels or organs and the like in real time, and the data provides important basis for accurate medical treatment based on high certainty, and is the best clinical practice with the best recovery of patients as the final target by systematically optimizing medical practice in the mutual balance of disease damage control and iatrogenic damage control. Therefore, a guide wire capable of realizing the interventional touch force monitoring needs to be developed.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned problems with existing interventional guidewires.

Therefore, the utility model aims to provide the interventional type touch sensor guide wire, which solves the problem that the traditional interventional type guide wire does not have the function of touch force monitoring.

In order to achieve the above object, the present utility model provides the following technical solutions:

the guide wire for the interventional touch sensor comprises a guide core, wherein the bottom of the guide core is fixedly connected with a guide wire head, a spiral piece is arranged on the outer side of the guide core, the lower end of the spiral piece is connected with the guide wire head (the lower end of the spiral piece is connected with the guide wire head in a welding mode), a first sensor placing part is connected to the spiral piece, a sealing cavity is formed in the first sensor placing part, a first pressure chip for detecting touch force of the guide wire head and external pressure of the sealing cavity is arranged in the first sensor placing part, the first pressure chip is connected with a lead-out wire of the first chip, and the upper end of the guide core is connected with a pressure sensing deformation part on the first sensor placing part.

The total length of the interventional touch sensor guidewire is between 40cm and 450 cm.

Preferably, the surface of the first sensor placement component is provided with a limit groove, and the inside of the limit groove is fixedly connected with the lower connecting fixed pattern area of the screw element, in this example, straight lines are adopted, and other patterns, such as threads, can also be adopted. The limiting groove is mutually matched with a fixed pattern area connected with the lower part of the spiral piece, the first sensor placing component (6) comprises a cylinder body, a silica gel sleeve (8) with an upper cover is fixedly sleeved at the lower end of the cylinder body (the silica gel sleeve is an embodiment of the pressure-sensitive deformation component), and the lower end of the upper cover of the silica gel sleeve (8) is connected with the upper end of the guide core (1).

Preferably, the screw member includes lower screw thread district and well screw thread district, lower screw thread district cover is in the guide core outside, and lower screw thread district lower extreme is connected with the guide wire head (lower screw thread district lower extreme and guide wire head welded connection), one side fixed connection down that the guide wire head was kept away from to lower screw thread district connects fixed line district, one side fixed connection in lower connection fixed line district kept away from lower screw thread district has well screw thread district, well screw thread district's inseparable degree is greater than lower screw thread district (inseparable degree can improve the propelling movement performance of guide wire greatly).

Although the present utility model is described in terms of a helical portion, the structure of the helical portion is similar to a spring structure.

Preferably, the cross-sectional shape of the silica gel cover with the barrel is the same, and the silica gel cover outer wall and the inner wall size of barrel mutually adapt, be provided with first substrate in the first sensor of silica gel cover top place part (6), first sensor place part bottom is sealed with the silica gel cover, the top of first sensor place part can be sealed with epoxy (first chip lead-out wire 11 is in the same place with first sensor place part through epoxy here too).

Further, the bottom of first substrate is the ring form, the top of first substrate is half tubular, one side at the top of first substrate and at the inside fixedly connected with first pressure chip of first sensor placement part, the reading of first pressure chip is blood pressure + touching power.

Preferably, the outside of the first pressure chip and the inside of the first sensor placing component are filled with pressure-guiding media, such as glycerin, silicone oil, air and the like, and the first chip outgoing line is connected with an external receiving end, such as a computer and the like. The pressure medium can better transmit pressure.

Preferably, the upper end of the middle thread region (5) is connected with an upper thread region (18) through an upper connecting and fixing thread region (17), a second sensor placing component (14) is fixedly connected at the upper connecting and fixing thread region (17), a second pressure chip (13) is arranged in the second sensor placing component (14), and the second pressure chip (13) is connected with a second chip outgoing line (15); the second sensor placing component (14) is provided with a pressure sensing through hole (12); a second substrate (16) is provided in the second sensor placement member (14), and a second pressure chip (13) is provided on the second substrate (16). The upper threaded zone (18) is more tight than the lower threaded zone (the tightness being so great that the pushability of the guide wire is improved). The second sensor placement member (14) may also be connected to the upper attachment land 17 by way of the aforementioned limiting slot.

The second substrate is fixedly connected to the inner wall of the second sensor placing component, and the second chip outgoing line is connected with an external receiving end, such as a computer. The second pressure chip can detect blood pressure data in the blood vessel and transmit the blood pressure data to an external receiving end through a second chip outgoing line, the reading of the second pressure chip is blood pressure in the blood vessel, the touch force reading is a first pressure chip reading-a second pressure chip reading, and sealing is not needed before and after the second sensor is placed on the component.

Preferably, the guide core 1 extends into the silica gel sleeve 8 from the lower end of the silica gel sleeve 8, and the fixing head 19 at the upper end of the guide core 1 is adhered to the inner wall of the upper cover of the silica gel sleeve 8.

The diameter of the fixing head 19 at the upper end of the guide core 1 is larger than the diameter of the middle lower part of the guide core 1.

The inner diameter of the lower threaded region 3 can be smaller than the diameter of the fixed head 19 at the upper end of the guide core 1, and the lower threaded region 3 can still clamp the fixed head 19 under the condition that the fixed head 19 falls off, so that the guide core 1 is prevented from falling off, and the protection performance is further improved.

In the technical scheme, the utility model has the technical effects and advantages that:

the first pressure chip 10 of the present utility model can monitor the pressure acting on the pressure sensitive deformable member, which pressure = touch pressure + ambient pressure outside the sealed cavity (i.e. blood pressure). When in use, the touch pressure value can be obtained by being matched with a monitoring component for monitoring the ambient pressure outside the sealed cavity.

In addition, the screw piece is arranged on the outer side of the guide core, so that when the guide core is connected with the guide head due to the fact that excessive pulling force is applied, for example, the guide core is separated from the guide head, and the guide head safety belt can be returned due to the fact that the lower end of the screw piece is connected with the guide head. The risk of the spinneret remaining inside the blood vessel due to connection failure is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a perspective view of a first sensor placement member of the present utility model;

FIG. 4 is an enlarged schematic view of portion A of FIG. 2 in accordance with the present utility model;

fig. 5 is an enlarged schematic view of the portion B of fig. 2 according to the present utility model.

Fig. 6 is a connecting structure diagram of the guide core 1 and the silica gel sleeve 8.

Reference numerals illustrate:

1. a guide core; 2. a thread guiding head; 3. a lower threaded region; 4. the lower part is connected with a fixed pattern area; 5. a medium thread region; 6. a first sensor placement member; 7. a limit groove; 8. a silica gel sleeve; 9. a first substrate; 10. a first pressure chip; 11. a first chip lead-out wire; 12. a pressure sensing through hole; 13. a second pressure chip; 14. a second sensor placement member; 15. a second chip lead-out wire; 16. a second substrate; 17. the upper part is connected with a fixed pattern area; 18. an upper threaded region; 19. the head is fixed.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The embodiment of the utility model discloses an interventional touch sensor guide wire.

The utility model provides an interventional touch sensor guide wire as shown in fig. 1-2, which comprises a guide core 1, wherein the bottom of the guide core 1 is fixedly connected with a guide wire head 2, and a screw piece is arranged on the outer side of the guide core 1. The screw member includes lower screw thread district 3, and the cup joint in the core 1 outside of leading of lower screw thread district 3, and lower screw thread district 3 lower extreme is connected with lead the silk head 2, and one side fixedly connected with that the silk head 2 was kept away from to lower screw thread district 3 is connected with down fixed line district 4, and one side fixedly connected with well screw thread district 5 that lower fixed line district 4 kept away from lower screw thread district 3 is connected with first sensor on the screw member places part 6.

When the spinneret 2 enters the inside of a blood vessel of a patient, the first chip detects pressure, such as touching force between the spinneret 2 and the inside of the blood vessel and blood pressure, and the pressure is transmitted through the guide core 1. When a connection failure occurs due to an excessive external tension, for example, due to the separation of the spinneret from the guide wire, the guide wire can be safely taken back due to the connection of the lower end of the screw with the guide wire.

In order to ensure the stable operation of the device, as shown in fig. 1-3, a limiting groove 7 is formed in the surface of the first sensor placement component 6, a lower connecting and fixing pattern area 4 in the spiral piece is fixedly connected to the inside of the limiting groove 7 (the first sensor placement component 6 and the lower connecting and fixing pattern area 4 can be welded or glued and fixed by an external heat shrinkage tube), and the limiting groove 7 and the lower connecting and fixing pattern area 4 of the spiral piece are mutually matched. The first sensor placing part 6 comprises a barrel, a silica gel sleeve 8 with an upper cover is fixedly sleeved at the lower end of the barrel, and the lower end of the upper cover of the silica gel sleeve 8 is connected with the upper end of the guide core 1.

The pressure is conducted to the first pressure chip 10 by the guide wire head 2 sequentially through the guide core 1, the silica gel sleeve 8 and the pressure conducting medium filled around the first pressure chip.

When the device is used, the silica gel sleeve has good deformation capability, can well sense pressure, and ensures the accuracy of measured data.

The lower thread area 3 is integrated with the lower connecting and fixing thread area 4, the lower connecting and fixing thread area 4 passes through and is fixed in the limit groove 7 (the fixing mode can be welding and adhesive bonding, and firm heat shrinkage tube protection and fixing are adopted outside), and is integrally connected with the middle thread area 5, and the middle thread area 5 is integrally connected with the upper thread area 18 in the same mode, so that the risk of falling off caused by sectional welding is avoided as a whole.

The inside of the housing 6 is filled with a pressure-guiding medium such as glycerin, silicone oil, etc., and the first chip outgoing line 11 is connected to an external receiving terminal such as a computer, etc.

The cross-sectional shape of silica gel cover 8 with the barrel is the same, and the silica gel cover 8 and the inner wall size looks mutual adaptation of barrel (i.e. silica gel cover 8 outer wall links to each other with the inner wall of barrel), be provided with first substrate 9 in the first sensor of silica gel cover 8 top place part 6, the bottom of first substrate 9 is the ring, and the top of first substrate 9 is half tubular, and one side at the top of first substrate 9 just is at the inside fixedly connected with first pressure chip 10 of first sensor place part 6.

In order to obtain intravascular blood pressure data, as shown in fig. 2-5, a pressure sensing through hole 12 is formed in the second sensor placement member 14 (intravascular blood pressure can be applied to the second chip through the pressure sensing through hole 12 and the front and rear end openings of the second sensor placement member 14, the pressure sensing through hole 12 is arranged to enable the blood pressure to be more accurately conducted to the second pressure chip 13), one end of the second chip outgoing line 15 is connected with the second pressure chip 13, the second pressure chip 13 is connected with the second substrate 16, the second substrate 16 is fixedly connected to the inner wall of the second sensor placement member 14, and the second chip outgoing line 15 is connected with an external receiving end, such as a computer.

The second pressure chip 13 transmits the blood pressure data in the detected blood vessel to an external receiving end through the second chip outgoing line 15, the reading of the second pressure chip 13 is the blood pressure in the blood vessel, the touch force reading is the reading of the first pressure chip 10-the reading of the second pressure chip 13, and the second sensor placing component 14 does not need to be sealed before and after.

The electrical connection point of the second pressure chip 13 and the second chip outgoing line 15 is sprayed with an insulating coating, the electrical connection point of the first pressure chip 10 and the first chip outgoing line 11 is sprayed with an insulating coating, and the first pressure chip 10, the second pressure chip 13, the second chip outgoing line 15 and the first chip outgoing line 11 are sprayed with an insulating coating. The chip can be adhered to the substrate by a medical quick-drying adhesive 4011 without a seam.

The first pressure chip 10 of the present utility model can monitor the pressure acting on the upper cover of the silicone sleeve 8, which pressure = touch pressure + ambient pressure outside the first sensor placement member 6. When in use, the touch pressure value can be obtained by being matched with a monitoring component of the external environmental pressure of the first sensor placing component 6. The first sensor placement member 6 is sealed, and the upper cover of the silicone sleeve 8 acts as a part of the surface of the first sensor placement member 6, i.e. a change in pressure experienced by the silicone sleeve 8 causes a change in pressure within the first sensor placement member 6, which is sensed by the first pressure chip 10. The first sensor placing part 6 is cylindrical, and the inner wall of the lower end of the first sensor placing part 6 is fixedly connected with the outer wall of the silica gel sleeve 8 (the connection fixing mode can be adhesive sealing).

When the spinneret 2 touches the vessel wall or the organ tissue in the body, the contact force acts on the silica gel sleeve 8, and when the contact force acts on the silica gel sleeve 8, the pressure Ptouch in the first sensor placing component 6 is formed; meanwhile, the blood pressure acts on the silica gel sleeve 8 to form the pressure P blood pressure in the first sensor placing part 6, the first pressure chip 10 in the first sensor placing part 6 precisely measures the superimposed pressure P cavity of the two pressures through the pressure guiding medium in the first sensor placing part 6, and then the P cavity = Ptouch+Pblood pressure;

the second pressure chip 13 monitors the blood pressure at the intervention site inside the blood vessel, which corresponds to the blood pressure value measured by the first pressure chip 10, which is the pdension. Then P outside the cavity (i.e. the pressure value measured by the second pressure chip 13) =pdensing;

the data of the P cavity and the outside of the P cavity are transmitted to the outside through the first chip outgoing line 11 and the second chip outgoing line 15, and the external processing system can obtain the P touch by comparing the P cavity and the outside of the P cavity, namely the P cavity-the outside of the P cavity= (P touch + P blood pressure) -P blood pressure = P touch.

The interventional medical robot system can judge whether the touch happens or not and can measure the touch intensity by analyzing the value of the P touch, and correspondingly adjust the touch intensity.

When the utility model is used, the blood pressure of a patient can be measured through external blood pressure equipment, and the function of the second pressure chip 13 is replaced. Of course, since the external blood pressure device measures the real-time synchronous blood pressure at the intervention position, the external blood pressure meter measures the blood pressure of the patient, and the pressure comparison mode is adopted to calculate the P touch, so that the calculation accuracy is poor.

The number of the first pressure chip 10 and the second pressure chip 13 may be plural. Multiple pressure chips may be placed side-by-side on respective substrates. A plurality of first pressure chips 10 and a plurality of second pressure chips 13 are provided, and data calibration can be performed. For example, two first pressure chips 10 and two second pressure chips 13 are provided. The two first pressure chips 10 can be data calibrated by means of the root mean square method. The two second pressure chips 13 can be data-calibrated by means of the root mean square method. And so on. The following is a detailed description.

When the spinneret 2 touches the vessel wall or internal organ tissue, the contact force acts on the silica gel sleeve 8 to form P touch, meanwhile, the blood pressure acts on the silica gel sleeve 8 to form P blood pressure, the first pressure chip 10 precisely measures the superimposed pressure P cavity of the two pressures through the pressure guiding medium, and then the P cavity = P touch + P blood pressure;

the second pressure chip 13 monitors the blood pressure at the intervention site, which corresponds to the blood pressure value measured by the first pressure chip 10, which is the pdensing. Then P outside the cavity (i.e. the pressure value measured by the second pressure chip 13) =pdensing;

when the spinneret 2 touches the vessel wall or the organ tissue in the body, the contact force acts on the silica gel sleeve 8, and when the contact force acts on the silica gel sleeve 8, the pressure P touch is formed; meanwhile, the pressure P is formed by the blood pressure acting on the silica gel sleeve 8, the first pressure chip 10 accurately measures the superimposed pressure P cavity 1 of the two pressures through the pressure guiding medium, and then the P cavity 1=Ptouch+Pblood pressure;

a further first pressure chip 10 is also provided on the first substrate 9 and obtains the contact force and the internal blood pressure by detecting the deformation change of the silicone sleeve 8. When the spinneret 2 touches the vessel wall or the organ tissue in the body, the contact force acts on the silica gel sleeve 8, the surface area S1 of the top plate of the silica gel sleeve 8 is fixed, and when the contact force acts on the surface area of the top plate of the silica gel sleeve 8, the pressure P touch is formed; meanwhile, the pressure P blood pressure is formed by the blood pressure acting on the surface area of the top plate of the silica gel sleeve 8, and the other first pressure chip 10 precisely measures the superimposed pressure P cavity 2 of the two pressures through the pressure guiding medium, so that the P cavity 2=Ptouch+Pblood pressure;

the data transmission is to outside, and the interventional medical robot system is through the numerical value in analysis P chamber 1 and P chamber 2, for example application root mean square in root mean square P chamber 1 and the square in P chamber 2 reopens the root number again to obtain more accurate measurement data P chamber all, and P chamber all is the sum that touches with P blood pressure more accurately.

The blood pressure pdension of the patient can also be measured by an extracorporeal blood pressure meter.

The processing system can obtain more accurate Ptouch by comparing the P cavity with the P blood pressure, namely, the P cavity is equal-P blood pressure= (P touch + P blood pressure) -P blood pressure = P touch;

the interventional medical robot system can judge whether the touch happens or not and can measure the touch intensity by analyzing the value of the P touch, and correspondingly adjust the touch intensity.

The measurement accuracy can be improved by the same method, for example, three pressure chips are packaged in the first sensor placing component (6), and two pressure chips are arranged in the second sensor placing component (14); and so on.

The first and second pressure chips 10 and 13 may employ SM I-1A-48-060-BAUU pressure chips.

The touch sensor guide wire can be calibrated, and the influence of the lower thread area 3 on the touch force can be eliminated through calibration.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. The utility model provides an intervention formula touch sensor seal wire, includes guide core (1), its characterized in that, the bottom fixedly connected with guide core (1) leads wire head (2), guide core (1) outside is provided with the screw, and the screw lower extreme is connected with guide wire head (2), be connected with first sensor on the screw and place part (6), first sensor is placed part (6) inside and is sealed cavity, is provided with in first sensor and detects guide wire head (2) touching force and the first pressure chip (10) of sealed cavity external pressure, and first pressure chip (10) link to each other with first chip lead-out wire (11), and guide core (1) upper end is continuous with the pressure sensing deformation part on first sensor is placed part (6).

2. The guide wire of an interventional touch sensor according to claim 1, wherein the screw comprises a lower threaded region (3), the lower threaded region (3) is sleeved outside the guide core (1), the lower end of the lower threaded region (3) is connected with the guide wire head (2), one side of the lower threaded region (3) away from the guide wire head (2) is fixedly connected with a lower connecting fixed threaded region (4), and one side of the lower connecting fixed threaded region (4) away from the lower threaded region (3) is fixedly connected with a middle threaded region (5).

3. The interventional touch sensor guide wire according to claim 1, wherein a limiting groove (7) is formed in the surface of the first sensor placement component (6), the limiting groove (7) is fixedly connected with the lower connecting fixing pattern area (4) inside, and the limiting groove (7) is mutually matched with the lower connecting fixing pattern area (4) in the spiral piece.

4. The interventional touch sensor guide wire according to claim 1, wherein the first sensor placement member (6) comprises a cylinder, a silica gel sleeve (8) with an upper cover is fixedly sleeved at the lower end of the cylinder, and the lower end of the upper cover of the silica gel sleeve (8) is connected with the upper end of the guide core (1).

5. The interventional touch sensor guide wire according to claim 4, wherein the cross-sectional shape of the silicone sleeve (8) and the barrel is the same, and the dimensions of the outer wall of the silicone sleeve (8) and the inner wall of the barrel are mutually adapted, and a first substrate (9) is arranged in the first sensor placement part (6) above the silicone sleeve (8).

6. The interventional touch sensor guide wire according to claim 5, wherein the bottom of the first substrate (9) is ring-shaped, the top of the first substrate (9) is semi-tubular, and a first pressure chip (10) is fixedly connected to one side of the top of the first substrate (9) and inside the first sensor placement member (6).

7. An interventional touch sensor guide wire according to claim 1, characterized in that the outside of the first pressure chip (10) and inside the first sensor placement member (6) is filled with a pressure guiding medium.

8. The interventional touch sensor guide wire according to claim 2, wherein the upper end of the middle thread region (5) is connected with the upper thread region (18) through an upper connecting and fixing thread region (17), a second sensor placing component (14) is fixedly connected at the upper connecting and fixing thread region (17), a second pressure chip (13) is arranged in the second sensor placing component (14), and the second pressure chip (13) is connected with a second chip outgoing line (15); a pressure sensing through hole (12) is formed in the second sensor placing component (14); a second substrate (16) is provided in the second sensor placement member (14), and a second pressure chip (13) is provided on the second substrate (16).

9. The guide wire for the interventional touch sensor according to claim 4, wherein the upper end fixing head (19) of the guide core (1) extends into the silica gel sleeve (8) from the lower end of the silica gel sleeve (8), and the upper end of the guide core (1) is adhered to the lower end of the upper cover of the silica gel sleeve (8).

10. The guide wire of an interventional touch sensor according to claim 2, wherein the diameter of the upper end fixing head (19) of the guide core (1) is larger than the diameter of the middle lower part of the guide core (1); the inner diameter of the lower thread area (3) is smaller than the diameter of the upper end fixing head (19) of the guide core (1).