Pressure guide wire connector and fractional flow reserve detection system

Abstract

The utility model discloses a pressure guide wire connector and a fractional flow reserve detection system. The pressure guide wire connector comprises a shell, a pressure sensor and a pressure sensor, the pressure guide wire clamping device is arranged in the shell and comprises a clamping state and an opening state, when the pressure guide wire clamping device is in the clamping state, the pressure guide wire clamping device is used for clamping a pressure guide wire, and when the pressure guide wire clamping device is in the opening state, the pressure guide wire can pass through the pressure guide wire clamping device; the actuator is movably arranged on the shell and is provided with a first position and a second position, when the actuator is located at the first position, the pressure guide wire clamping device is in a clamping state, and when the actuator is located at the second position, the pressure guide wire clamping device is in an opening state; and the locking structure is arranged between the actuator and the shell and is used for locking the actuator when the actuator is at the second position. When the actuator is located at the second position, the locking structure enables the actuator to be kept at the second position, the pressure guide wire clamping device is kept in an open state, the pressure guide wire can be inserted and pulled out with one hand, and the actuator does not need to be manually pressed all the time to be kept at the second position.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field more specifically, relate to a pressure guide wire connector. In addition, the utility model relates to a blood flow reserve fraction detection system comprising the pressure guide wire connector. BACKGROUND

[0002] The blood flow reserve fraction detection system is used for evaluating the functional stenosis of coronary artery and has wide application in clinical medicine, and the blood flow reserve fraction detection system measures the blood flow pressure of the proximal and distal ends of the lesion, calculates the blood flow reserve fraction, and uses the blood flow reserve fraction as an index for evaluating the stenosis degree of the lesion blood vessel.

[0003] The pressure guide wire connector is a key component of the blood flow reserve fraction detection system and is used for locking or releasing the pressure guide wire, and when the pressure guide wire is locked, the blood flow pressure signal can be transmitted, and when the pressure guide wire is released, the pressure guide wire can be inserted and pulled out.

[0004] However, in the related art, when the actuator of the pressure guide wire connector is actuated to release the pressure guide wire, the hand needs to act on the actuator all the time, and at the same time, the operation of inserting and pulling out the pressure guide wire is performed, and the operation is inconvenient.

[0005] In summary, how to provide a pressure guide wire connector for conveniently inserting and pulling out the pressure guide wire is a problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENT

[0006] Therefore, the utility model aims at providing a pressure guide wire connector for conveniently inserting and pulling out the pressure guide wire.

[0007] Another object of the utility model is to provide a blood flow reserve fraction detection system comprising the pressure guide wire connector for conveniently inserting and pulling out the pressure guide wire.

[0008] In order to achieve the above object, the utility model provides the following technical scheme:

[0009] A pressure guide wire connector comprises:

[0010] A shell;

[0011] A pressure guide wire clamping device is arranged in the shell and comprises a clamping state and an open state, the pressure guide wire clamping device is used for clamping the pressure guide wire when the pressure guide wire clamping device is in the clamping state, and the pressure guide wire clamping device is used for allowing the pressure guide wire to pass through when the pressure guide wire clamping device is in the open state.

[0012] an actuator movably arranged in the housing and having a first position and a second position, when the actuator is in the first position, the pressure wire clamping device is in the clamped state, and when the actuator is in the second position, the pressure wire clamping device is in the open state;

[0013] a locking structure arranged between the actuator and the housing and used for locking the actuator when the actuator is in the second position.

[0014] Optionally, the locking structure comprises:

[0015] a first locking position arranged in the actuator;

[0016] a second locking position arranged in the housing;

[0017] when the actuator is in the second position, the first locking position is engaged with the second locking position.

[0018] Optionally, the housing is provided with a sliding groove, and the actuator is provided with a sliding part which is in sliding cooperation with the sliding groove.

[0019] Optionally, the first locking position is a clamping groove arranged in the sliding part.

[0020] at least one cantilever part is arranged in the sliding groove, the sliding part is slidable along the cantilever part, and the second locking position is a clamping hook arranged at a free end of the cantilever part.

[0021] Optionally, the free end of the cantilever part and the housing are provided with a mounting gap, and the mounting gap is used for mounting the sliding part into the housing.

[0022] Optionally, the pressure wire clamping device comprises:

[0023] a clamping jaw which is openable or contractible, when the clamping jaw is open, the pressure wire is released, and when the clamping jaw is contracted, the pressure wire is clamped;

[0024] a clamping jaw cap which is movable towards or away from the clamping jaw, when the clamping jaw cap is close to the clamping jaw, the clamping jaw is contracted, and when the clamping jaw cap is away from the clamping jaw, the clamping jaw is open; the actuator is provided with a protruding part which protrudes into the housing, the protruding part is in abutment with the clamping jaw cap, so that when the actuator moves from the first position to the second position, the protruding part drives the clamping jaw cap away from the clamping jaw;

[0025] a first elastic member connected between the housing and the clamping jaw cap and used for providing the clamping jaw cap with an elastic force close to the clamping jaw.

[0026] Optionally, the jaw cap is provided with a tapered slot, and one end of the jaw extends into the tapered slot and abuts against the slot wall of the tapered slot.

[0027] Optionally, the pressure guide wire is internally provided with a first optical fiber, the shell is connected with a cable assembly, the cable assembly is internally provided with a second optical fiber, and the first optical fiber abuts against the end face of the second optical fiber when the pressure guide wire is clamped.

[0028] Optionally, the jaw is provided with a jaw seat at one end away from the jaw cap, and a second elastic member is arranged between the jaw seat and the shell, and the elastic force difference between the first elastic member and the second elastic member makes the first optical fiber abut against the second optical fiber.

[0029] Optionally, the jaw seat is provided with a first sleeve at one end away from the jaw, the jaw seat is provided with a clearance hole for the pressure guide wire to pass through, and the first sleeve is provided with a guide hole penetrating through both ends thereof, and the pressure guide wire and the second optical fiber are arranged at both ends of the first sleeve and abut against the preset position of the guide hole.

[0030] Optionally, the first sleeve is sleeved with a second sleeve.

[0031] Optionally, the shell is internally provided with a positioning ring, and the jaw cap is in sliding fit with the positioning ring.

[0032] Optionally, the shell is connected with a front cover, and the front cover is provided with a limiting portion for limiting the sliding stroke of the jaw cap away from the jaw.

[0033] A blood flow reserve fraction detection system comprises the pressure guide wire connector.

[0034] The pressure guide wire connector has the following beneficial effects:

[0035] The actuator can move between the first position and the second position to realize state switching of the pressure guide wire clamping device, so that the pressure guide wire clamping device can switch between the clamped state and the open state, the pressure guide wire clamping device can clamp the pressure guide wire when in the clamped state, and the pressure guide wire clamping device can pass through the pressure guide wire when in the open state. When the actuator moves from the first position to the second position, the locking structure can lock the actuator, so that the actuator is stably kept in the second position, and the pressure guide wire clamping device is kept in the open state, and at this time, the operation of plugging and unplugging the pressure guide wire can be performed. Compared with the related art, the actuator does not need to be manually kept in the second position all the time, so that single-handed operation can be realized when plugging and unplugging the pressure guide wire, the operation is convenient, and many conveniences are brought to the operator.

[0036] The blood flow reserve fraction detection system provided by the utility model has the same beneficial effects as the pressure guide wire connector. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the related technical scheme, the following will briefly introduce the drawings needed to be used in the embodiment or the related technical description, obviously, the drawings in the following description are only part of the embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained without creative labor on the premise of the provided drawings.

[0038] Figure 1 The exploded view of the pressure guide wire connector provided by the embodiment of the utility model;

[0039] Figure 2 For Figure 1 The structure schematic view after assembly;

[0040] Figure 3 The structure schematic view of the actuator;

[0041] Figure 4 The structure schematic view of the shell;

[0042] Figure 5 The sectional view when the clamping jaw loosens the guide wire;

[0043] Figure 6 The sectional view when the clamping jaw clamps the guide wire.

[0044] Reference signs:

[0045] 1 - shell; 11 - sliding groove; 111 - cantilever part; 112 - hook; 12 - mounting notch; 2 - actuator; 21 - sliding part; 211 - clamping groove; 22 - extension part; 31 - clamping jaw; 32 - clamping jaw cap; 321 - conical groove; 33 - first elastic member; 34 - clamping jaw seat; 35 - second elastic member; 4 - cable assembly; 5 - first sleeve; 6 - second sleeve; 7 - positioning ring; 8 - front cover; 9 - pressure guide wire. DETAILED DESCRIPTION

[0046] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0047] The utility model discloses a pressure guide wire connector, convenient to plug and unplug the pressure guide wire. Another core of the utility model provides a blood flow reserve fraction detection system comprising the pressure guide wire connector, convenient to plug and unplug the pressure guide wire.

[0048] Please refer to Figure 1 And Figure 2 The utility model discloses a pressure guide wire connector, including casing 1, pressure guide wire clamping device, actuator 2 and locking structure, pressure guide wire clamping device is located in casing 1, and pressure guide wire clamping device includes clamping state and open state, pressure guide wire clamping device is in clamping state, for clamping pressure guide wire 9, pressure guide wire clamping device is in open state, for pressure guide wire 9 is passed through;Actuator 2 movably is located in casing 1, and actuator 2 has first position and second position, when actuator 2 is located in first position, pressure guide wire clamping device is in clamping state, thereby clamping pressure guide wire 9, when actuator 2 is located in second position, pressure guide wire clamping device is in open state, pressure guide wire 9 can pass through at this time;Locking structure is located between actuator 2 and casing 1, for when actuator 2 is located in second position, make actuator 2 lock.

[0049] That is, actuator 2 can move between first position and second position to realize the state switching of pressure guide wire clamping device, so that pressure guide wire clamping device can switch between clamping state and open state, when pressure guide wire clamping device is in clamping state, pressure guide wire 9 can be clamped, when pressure guide wire clamping device is in open state, pressure guide wire 9 can be passed through. When actuator 2 moves from first position to second position, locking structure can make actuator 2 lock, so that actuator 2 stably keeps in second position, and then pressure guide wire clamping device keeps open state, and at this time, the operation of plugging and unplugging pressure guide wire 9 can be carried out. Compared with the related art, it is not necessary for a person to always give actuator 2 a force to make actuator 2 keep in second position, so that single-hand operation can be realized when plugging and unplugging pressure guide wire 9, and the operation is convenient, which brings many conveniences to operators.

[0050] It should be noted that the specific structure of the locking structure is not limited in this embodiment, as long as the locking of actuator 2 in second position can be realized.

[0051] In some embodiments, the locking structure comprises a first locking part and a second locking part, the first locking part is arranged on the actuator 2, the second locking part is arranged on the housing 1, and the first locking part and the second locking part are engaged when the actuator 2 is in the second position. That is, when the actuator 2 is moved to the second position, the first locking part and the second locking part can be engaged, so that the actuator 2 and the housing 1 are fixed by the engagement of the first locking part and the second locking part, and the actuator 2 is kept in the second position. When it is needed to move the actuator 2 from the second position to the first position, only an external force needs to be applied to the actuator 2 to overcome the engagement force between the first locking part and the second locking part, so that the first locking part and the second locking part are disengaged, and the actuator 2 is moved from the second position to the first position.

[0052] In addition, the above embodiments do not limit the arrangement of the actuator 2 on the housing 1, that is, the specific movement of the actuator 2 is not limited, as long as the actuator 2 can move relative to the housing 1 to switch the position of the actuator 2 between the first position and the second position.

[0053] Please refer to Figure 3 and Figure 4 In order to improve the stability and correctness of the movement of the actuator 2, in some embodiments, the housing 1 is provided with a sliding groove 11, and the actuator 2 is provided with a sliding part 21 which is in sliding cooperation with the sliding groove 11. That is, when the actuator 2 switches between the first position and the second position, the sliding part 21 of the actuator 2 slides along the sliding groove 11 of the housing 1, and the sliding part 21 is limited and guided by the sliding groove 11, so that the sliding part 21 slides along the sliding groove 11, thereby ensuring the stability and correctness of the movement of the actuator 2.

[0054] Further, the above embodiments do not limit the specific structure of the first locking part and the second locking part, as long as the first locking part and the second locking part can be engaged to lock the actuator 2 in the second position.

[0055] Please continue to refer to Figure 3 and Figure 4, considering the simplicity of the structure, in some embodiments, the first fastening position is a clamping groove 211 provided on the sliding part 21, and the sliding groove 11 is provided with at least one cantilever part 111, the sliding part 21 can slide along the cantilever part 111, and the second fastening position is a clamping hook 112 provided on the free end of the cantilever part 111. That is, in this embodiment, the cantilever part 111 is arranged in the sliding groove 11, and the sliding part 21 slides along the cantilever part 111, and when the sliding part 21 slides to a position where the clamping groove 211 is aligned with the clamping hook 112, the clamping hook 112 is used to clamp the sliding part 21. It can be understood that the end of the cantilever part 111 where the clamping hook 112 is located is beneficial to form a non-closed structure, so that the clamping hook 112 can be elastically deformed by extrusion under the action of an external force, which is beneficial to the sliding part 21 to enter the sliding cooperation position with the cantilever part 111, that is, this structure can not only realize the locking of the actuator 2 in the second position, but also facilitate the installation of the actuator 2.

[0056] It should be noted that the number of cantilever parts 111 can be one or at least two. When the number of cantilever parts 111 is one, one cantilever part 111 is opposite to the inner side wall of the sliding groove 11 to form a sliding channel for the sliding part 21 to slide.

[0057] In other embodiments, the sliding groove 11 is provided with two cantilever parts 111 arranged in parallel, a channel for the sliding part 21 to slide is formed between the two cantilever parts 111, the second fastening position is a clamping hook 112 provided on the free end of the two cantilever parts 111, and the clamping hooks 112 of the two cantilever parts 111 are oppositely arranged. That is, the sliding groove 11 is a straight groove, and the actuator 2 can reciprocate in a direction parallel to the cantilever part 111, thereby realizing the switching of the actuator 2 between the first position and the second position. It can be understood that the sliding part 21 is located between the two cantilever parts 111, and when the actuator 2 is switched in position, the sliding part 21 slides between the two cantilever parts 111, and when one end of the sliding part 21 slides to the free end of the cantilever part 111, the clamping hook 112 at the free end of the cantilever part 111 is opened by the sliding part 21 under the action of the force of the actuator 2 to continue to slide, until the clamping groove 211 is aligned with the clamping hook 112, and then the clamping hook 112 is clamped into the clamping groove 211, realizing the relative fixation of the sliding part 21 and the cantilever part 111, that is, realizing the fixation of the actuator 2. It can be understood that at this time, the sliding part 21 still has a part located between the two cantilever parts 111, so as to avoid the sliding part 21 from being separated from the sliding groove 11. This structure is ingenious and simple, occupies small space, improves the space utilization rate, and does not need to use precise parts with special requirements on process and cost, the process is simple, and is beneficial to realize the miniaturization of the structure. It can be understood that the clamping groove 211 corresponds to the clamping hook 112. When one clamping hook 112 is arranged at the free end of each of the two cantilever parts 111, one clamping groove 211 is arranged at each side of the sliding part 21, so that the clamping hook 112 and the clamping groove 211 are correspondingly matched.

[0058] It can be understood that in some embodiments, the two cantilever portions 111 each have a preset gap between the side away from the clasp 112 and the shell 1, so that when the end of the sliding portion 21 slides out of the free ends of the two cantilever portions 111, the free ends of the two cantilever portions 111 are extruded in a direction away from each other, thereby facilitating the end of the sliding portion 21 to slide out of the sliding groove 11, so that the clasp groove 211 of the side of the sliding portion 21 can reach the clasp 112. At this time, the free ends of the cantilever portions 111 are deformed and reset, so that the clasp 112 is clamped into the clasp groove 211.

[0059] Of course, in other embodiments, the clasp 112 can also be a resilient member, for example, the clasp 112 is a spring. When the end of the sliding portion 21 slides out of the free ends of the two cantilever portions 111, the clasp 112 is extruded and elastically deformed, so that the end of the sliding portion 21 slides out of the sliding groove 11. When the clasp groove 211 is aligned with the clasp 112, the clasp 112 is elastically reset and clamped into the clasp groove 211.

[0060] Further, please refer to Figure 4 In order to facilitate the installation of the actuator 2, in some embodiments, the free end of the cantilever portion 111 has an installation gap 12 between the shell 1, and the installation gap 12 is used to install the sliding portion 21 into the shell 1. That is, when assembling the actuator 2 and the shell 1, the sliding portion 21 is passed through the installation gap 12 and slides into the space between the two cantilever portions 111, thereby achieving the assembly of the actuator 2 and the shell 1. It can be understood that the end of the sliding portion 21 away from the operating part of the actuator 2 is provided with a stop portion, and the size of the stop portion is greater than the size of the installation gap 12. During installation, the stop portion is extruded and enters the inside of the shell 1 from the installation gap 12 by tilting or extruding the stop portion. At this time, the stop portion cannot come out of the installation gap 12, so that the actuator 2 cannot be taken out of the shell 1. It should be noted that the stop portion here can be the protruding portion 22 described below, that is, the protruding portion 22 has the function of preventing the actuator 2 from being taken out of the shell 1, and also has the function of moving the push jaw cap 32 described below.

[0061] In addition, in the above embodiments, the specific structure of the pressure guide wire clamping device is not limited, as long as the pressure guide wire clamping device can clamp or release the pressure guide wire 9.

[0062] Please refer to Figure 5 and Figure 6In some embodiments, the pressure wire clamping device comprises a clamping jaw 31, a clamping jaw cap 32 and a first elastic member 33. The clamping jaw 31 can be opened or contracted. When the clamping jaw 31 is opened, the pressure wire 9 is loosened. When the clamping jaw 31 is contracted, the pressure wire 9 is clamped. The clamping jaw cap 32 can be moved towards or away from the clamping jaw 31. When the clamping jaw cap 32 is close to the clamping jaw 31, the clamping jaw 31 is contracted. When the clamping jaw cap 32 is away from the clamping jaw 31, the clamping jaw 31 is opened. The actuator 2 is provided with an extension 22 extending into the housing 1. The extension 22 abuts against the clamping jaw cap 32, so that when the actuator 2 moves from the first position to the second position, the extension 22 drives the clamping jaw cap 32 away from the clamping jaw 31. The first elastic member 33 is connected between the housing 1 and the clamping jaw cap 32. The first elastic member 33 is used to provide the clamping jaw cap 32 with an elastic force towards the clamping jaw 31.

[0063] That is, as shown in Figure 5 , when it is needed to loosen the pressure wire 9, the actuator 2 is pushed to move from the first position to the second position. In this process, the extension 22 pushes the clamping jaw cap 32 away from the clamping jaw 31, so that the clamping jaw 31 is opened, and the pressure wire 9 is loosened. At this time, the operation of inserting or pulling the pressure wire 9 can be performed. At this time, the locking structure locks the actuator 2 in the second position. In the process of pushing the clamping jaw cap 32 away from the clamping jaw 31 by the extension 22, the clamping jaw cap 32 presses the first elastic member 33, so that the first elastic member 33 stores elastic force. As shown in Figure 6 , when it is needed to clamp the pressure wire 9, the locking structure is unlocked from the actuator 2, for example, by applying an external force to the actuator 2, so that the clamping jaw cap 32 is close to the clamping jaw 31 under the action of the elastic force of the first elastic member 33, so that the clamping jaw 31 is contracted, and the pressure wire 9 is clamped by the clamping jaw 31. In this process, the clamping jaw cap 32 drives the extension 22 to reset, so that the actuator 2 returns to the first position. As can be seen, the pressure wire clamping device can clamp or loosen the pressure wire 9, and has a simple structure and is convenient to realize.

[0064] It should be noted that the connection mode between the clamping jaw cap 32 and the clamping jaw 31 is not limited in this embodiment, as long as the clamping jaw cap 32 can make the clamping jaw 31 open when it is away from the clamping jaw 31, and the clamping jaw 31 can be contracted when the clamping jaw cap 32 is close to the clamping jaw 31.

[0065] Please continue to refer to Figure 5 and Figure 6In some embodiments, the clamping jaw cap 32 is provided with a tapered slot 321, and one end of the clamping jaw 31 extends into the tapered slot 321 and abuts the slot wall of the tapered slot 321. It can be understood that the tapered slot 321 gradually decreases in radial size from the end close to the clamping jaw 31 to the end away from the clamping jaw 31. That is, when the clamping jaw cap 32 is close to the clamping jaw 31, the one end of the clamping jaw 31 slides along the slot wall of the tapered slot 321, so that the one end of the clamping jaw 31 slides from a position with a larger radial size of the tapered slot 321 to a position with a smaller radial size of the tapered slot 321, so that the clamping jaw 31 is retracted under the limit of the tapered slot 321. When the clamping jaw cap 32 is away from the clamping jaw 31, the one end of the clamping jaw 31 slides along the slot wall of the tapered slot 321, so that the one end of the clamping jaw 31 slides from a position with a smaller radial size of the tapered slot 321 to a position with a larger radial size of the tapered slot 321, so that the clamping jaw 31 is opened under the limit of the tapered slot 321. This structure is simple and convenient to realize.

[0066] In addition, please continue to refer to Figure 5 and Figure 6 In order to realize the transmission of the pressure signal, in some embodiments, the pressure guide wire 9 is provided with a first optical fiber, the shell 1 is connected with a cable assembly 4, the cable assembly 4 is provided with a second optical fiber, and when the pressure guide wire 9 is clamped, the first optical fiber abuts the end face of the second optical fiber.

[0067] It can be understood that when the blood flow reserve fraction is detected by using the blood flow reserve fraction detection system, the pressure guide wire 9 is placed in the human body to obtain a distal blood flow pressure signal, and the blood flow pressure signal needs to be transmitted to the receiving device through the pressure guide wire 9. The first optical fiber in the pressure guide wire 9 and the second optical fiber in the cable assembly 4 are end-to-end connected, so that the transmission of the blood flow pressure signal is realized.

[0068] Further, please continue to refer to Figure 5 and Figure 6In order to ensure the axial pressure force required for the tight contact between the end faces of the first optical fiber and the second optical fiber, in some embodiments, the end of the clamping jaw 31 away from the clamping jaw cap 32 is provided with a clamping jaw seat 34, and a second elastic member 35 is arranged between the clamping jaw seat 34 and the shell 1. The difference between the elastic forces of the first elastic member 33 and the second elastic member 35 makes the first optical fiber tightly contact the second optical fiber. It can be understood that the clamping jaw 31 and the clamping jaw seat 34 are connected together, the elastic force of the first elastic member 33 acts on the clamping jaw 31 through the clamping jaw cap 32, so that the clamping jaw 31 and the pressure guide wire 9 as a whole generate an axial force close to the second optical fiber, and the elastic force of the second elastic member 35 acts on the clamping jaw 31 through the clamping jaw seat 34, so that the clamping jaw 31 and the pressure guide wire 9 as a whole generate an axial force away from the second optical fiber, and the difference between the elastic force of the first elastic member 33 and the elastic force of the second elastic member 35 is the axial pressure of the first optical fiber tightly contacting the second optical fiber. The embodiment utilizes the difference between the elastic forces of the first elastic member 33 and the second elastic member 35 to provide the first optical fiber in the pressure guide wire 9 with the axial pressure required for the tight contact between the end faces of the first optical fiber and the second optical fiber, which is beneficial to the reasonable design of the axial pressure between the first optical fiber and the second optical fiber, so that the first optical fiber and the second optical fiber have a suitable axial pressure, thereby preventing the first optical fiber and / or the second optical fiber from being pressed on the basis of ensuring the normal transmission of optical signals.

[0069] It should be noted that the specific connection mode of the clamping jaw 31 and the clamping jaw seat 34 is not limited in the embodiment, and in some embodiments, the clamping jaw 31 and the clamping jaw seat 34 are threadedly connected, welded, glued, connected by a fastener or hot connected, etc.

[0070] In addition, please continue to refer to Figure 5 and Figure 6 In order to ensure that the first optical fiber and the second optical fiber can be well centered, in some embodiments, the end of the clamping jaw seat 34 away from the clamping jaw 31 is provided with a first sleeve 5, the clamping jaw seat 34 is provided with a clearance hole for the pressure guide wire 9 to pass through, and the first sleeve 5 is provided with a guide hole penetrating through both ends thereof. The pressure guide wire 9 and the second optical fiber are respectively arranged at both ends of the first sleeve 5 and abut at the preset position of the guide hole. That is, when the pressure guide wire 9 is inserted into the shell 1, the pressure guide wire 9 passes through the clearance hole of the clamping jaw seat 34 from the inside of the clamping jaw 31 and enters the first sleeve 5 from one end of the guide hole of the first sleeve 5, and the second optical fiber of the cable assembly 4 enters the first sleeve 5 from the other end of the guide hole, so that the first optical fiber and the second optical fiber in the pressure guide wire 9 abut at the preset position of the guide hole. The embodiment utilizes the guide hole to limit and guide the pressure guide wire 9 and the second optical fiber respectively, so that the first optical fiber and the second optical fiber in the pressure guide wire 9 have good centering, thereby ensuring that the first optical fiber and the second optical fiber effectively contact the end faces and avoid the end faces of the first optical fiber and the second optical fiber being misaligned. It can be understood that the second optical fiber can also pass through the guide wire to enter the guide hole.

[0071] Further, please continue to refer to Figure 5 And Figure 6 In some embodiments, the outer peripheral part of the first sleeve 5 is sleeved with the second sleeve 6. That is, the present embodiment improves the rigidity of the first sleeve 5 by further sleeving the second sleeve 6 on the outer peripheral part of the first sleeve 5, which is conducive to ensuring the end face centering of the first optical fiber and the second optical fiber.

[0072] It should be noted that the present embodiment does not limit the specific material of the first sleeve 5 and the second sleeve 6. In some embodiments, the first sleeve 5 is a ceramic sleeve, and the second sleeve 6 is an elastic sleeve.

[0073] In addition, please continue to refer to Figure 5 And Figure 6 In order to maintain the centering of the jaw cap 32, in some embodiments, a positioning ring 7 is arranged in the shell 1, and the jaw cap 32 is in sliding fit with the positioning ring 7. That is, the present embodiment uses the positioning ring 7 to slide and limit the jaw cap 32, so that the jaw cap 32 slides in the direction defined by the positioning ring 7, thereby facilitating the centering of the jaw cap 32. Compared with the overall sliding contact of the jaw cap 32 with the inner wall of the shell 1, by arranging the positioning ring 7, the contact area of the jaw cap 32 with the inner wall of the shell 1 can be reduced, thereby reducing the friction when the jaw cap 32 moves axially.

[0074] It should be noted that the present embodiment does not limit the specific arrangement position of the positioning ring 7, and the positioning ring 7 can correspond to any axial position of the jaw cap 32. In some embodiments, the positioning ring 7 is located at the end of the jaw cap 32 away from the jaw 31.

[0075] In addition, please continue to refer to Figure 5 And Figure 6 Figure 5 Figure 6 In order to facilitate the axial positioning of the jaw cap 32 when the jaw cap 32 is away from the jaw 31, in some embodiments, the shell 1 is connected with a front cover 8, and the front cover 8 is provided with a limiting part for limiting the sliding stroke of the jaw cap 32 when the jaw cap 32 is away from the jaw 31. That is, when the jaw cap 32 is away from the jaw 31 by pushing the actuator 2, when the end of the jaw cap 32 away from the jaw 31 abuts against the limiting part, it indicates that the jaw cap 32 has moved to the right position, and even if external force is continuously applied to the actuator 2, the actuator 2 will not continue to move, which is conducive to locking the actuator 2 in the second position.

[0076] In addition to the above pressure guide wire connector, the utility model also provides a blood flow reserve fraction detection system comprising the pressure guide wire connector disclosed in the above embodiment, and the structures of other parts of the blood flow reserve fraction detection system please refer to the related technology, and this paper will not repeat here.

[0077] The pressure guide wire connector of any one of the above embodiments is adopted in the embodiment, and has the same beneficial effects as the pressure guide wire connector.

[0078] It should also be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions.

[0079] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0080] The pressure guide wire connector and the blood flow reserve fraction detection system are described in detail above. The principle and implementation of the utility model are described by applying specific examples. The above embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that the ordinary skilled in the art can make some improvements and modifications to the utility model without departing from the principle of the utility model. These improvements and modifications also fall within the protection scope of the utility model.

Claims

1. A pressure guidewire connector, comprising: The utility model relates to a pressure guide wire clamping device, and particularly relates to a pressure guide wire clamping device. The utility model discloses a pressure guide wire clamping device, comprising: A shell (1); A pressure guide wire clamping device is arranged in the shell (1), and comprises a clamping state and an open state, the pressure guide wire clamping device is used for clamping a pressure guide wire (9) when being in the clamping state, and the pressure guide wire clamping device is used for the pressure guide wire (9) to pass through when being in the open state; An actuator (2) is movably arranged in the shell (1) and has a first position and a second position, the pressure guide wire clamping device is in the clamping state when the actuator (2) is located in the first position, and the pressure guide wire clamping device is in the open state when the actuator (2) is located in the second position; 2. The pressure guidewire connector of claim 1, wherein, A locking structure is arranged between the actuator (2) and the shell (1) and is used for locking the actuator (2) when the actuator (2) is located in the second position. The locking structure comprises: A first buckle is arranged on the actuator (2); A second buckle is arranged on the shell (1); 3. The pressure guidewire connector of claim 2, wherein, When the actuator (2) is located in the second position, the first buckle is buckled with the second buckle.

4. The pressure guidewire connector of claim 3, wherein, The shell (1) is provided with a sliding groove (11), and the actuator (2) is provided with a sliding part (21) that is in sliding fit with the sliding groove (11). The first buckle is a clamping groove (211) arranged on the sliding part (21); 5. The pressure guidewire connector of claim 4, wherein, At least one cantilever part (111) is arranged in the sliding groove (11), the sliding part (21) can slide along the cantilever part (111), and the second buckle is a clamping hook (112) arranged on the free end of the cantilever part (111).

6. The pressure guidewire connector of any of claims 1-5, wherein, The free end of the cantilever part (111) and the shell (1) have a mounting gap (12), and the mounting gap (12) is used for mounting the sliding part (21) into the shell (1). The pressure guide wire clamping device comprises: A clamping jaw (31) that can be opened or contracted, the clamping jaw (31) is loosened when being opened, the clamping jaw (31) is clamped when being contracted, a clamping jaw cap (32) that can be moved towards or away from the clamping jaw (31), the clamping jaw cap (32) is close to the clamping jaw (31) and makes the clamping jaw (31) contract, the clamping jaw cap (32) is away from the clamping jaw (31) and makes the clamping jaw (31) open, the actuator (2) is provided with a protruding part (22) that protrudes into the shell (1), the protruding part (22) is in abutment with the clamping jaw cap (32), so that the protruding part (22) drives the clamping jaw cap (32) away from the clamping jaw (31) when the actuator (2) moves from the first position to the second position, a first elastic member (33) is connected between the shell (1) and the clamping jaw cap (32) and is used for providing the clamping jaw cap (32) with an elastic force close to the clamping jaw (31). The clamping jaw cap (32) is provided with a tapered groove (321), one end of the clamping jaw (31) is inserted into the tapered groove (321) and is in abutment with the groove wall of the tapered groove (321).

7. The pressure guidewire connector of claim 6, wherein, ​ 8. The pressure guidewire connector of claim 6, wherein, The pressure guide wire (9) is internally provided with a first optical fiber, the shell (1) is connected with a cable assembly (4), the cable assembly (4) is internally provided with a second optical fiber, when the pressure guide wire (9) is clamped, the first optical fiber abuts against the end face of the second optical fiber.

9. The pressure guidewire connector of claim 8, wherein, The end of the clamping jaw (31) away from the clamping jaw cap (32) is provided with a clamping jaw seat (34), a second elastic member (35) is arranged between the clamping jaw seat (34) and the shell (1), and the elastic force difference between the first elastic member (33) and the second elastic member (35) makes the first optical fiber abut against the second optical fiber.

10. The pressure guidewire connector of claim 9, wherein, The end of the clamping jaw seat (34) away from the clamping jaw (31) is provided with a first sleeve (5), the clamping jaw seat (34) is provided with a clearance hole for the pressure guide wire (9) to pass through, the first sleeve (5) is provided with a guide hole penetrating through both ends thereof, and the pressure guide wire (9) and the second optical fiber are respectively arranged at both ends of the first sleeve (5) and abut against each other at the preset position of the guide hole.

11. The pressure guidewire connector of claim 10, wherein, The outer circumferential part of the first sleeve (5) is sleeved with a second sleeve (6).

12. The pressure guidewire connector of claim 6, wherein, The shell (1) is internally provided with a positioning ring (7), and the clamping jaw cap (32) is in sliding fit with the positioning ring (7).

13. The pressure guidewire connector of claim 6, wherein, The shell (1) is connected with a front cover (8), and the front cover (8) is provided with a limiting part for limiting the sliding stroke of the clamping jaw cap (32) when the clamping jaw cap (32) is away from the clamping jaw (31).

14. A system for detecting fractional flow reserve, characterized by The pressure guide wire connector comprises the pressure guide wire connector according to any one of claims 1-13. The pressure guide wire connector comprises the pressure guide wire connector according to any one of claims 1-13.

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