Puncture device, puncture system and puncture method

Abstract

The invention relates to the technical field of medical instruments, and discloses a puncture device, a puncture system and a puncture method.The puncture device comprises a puncture unit, a positioning unit and an auxiliary unit, the positioning unit and the auxiliary unit are arranged and are both conductors, and therefore development can be conducted on a three-dimensional display unit. The flexibility of the puncture structure can deform along with organs in the body of the patient, and the accurate position of the positioning unit relative to the to-be-punctured part needs to be determined through the auxiliary unit. On the basis, a doctor can move the puncture structure to the to-be-punctured part at a time, the position of the puncture unit does not need to be adjusted many times in the related technology, and therefore the efficiency of moving the puncture device to the to-be-punctured part is improved, and the technical effect of saving operation time is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a puncture device, a puncture system and a puncture method. Background Art

[0002] In the existing cardiac radiofrequency ablation, a puncture device is inserted into the fossa ovalis to facilitate puncture inspection of the interior of the heart. Specifically, the puncture device is a conductor, so that the puncture device can clearly display the location of the fossa ovalis and the location of the puncture device in the human body in a three-dimensional manner with the aid of the imaging displayed by the three-dimensional cardiac electrophysiological mapping system, so that the doctor can control the puncture device to move to the location of the fossa ovalis.

[0003] However, in the process of controlling the puncture device to enter the oval fossa through imaging, the doctor needs to adjust the puncture device several times before entering the oval fossa, which increases the operation time and reduces the operation efficiency. Summary of the invention

[0004] In view of this, the present invention provides a puncture device, a puncture system and a puncture method to solve the problem that in the process of controlling the puncture device to enter the oval fossa through imaging, the doctor needs to adjust the puncture device multiple times before entering the oval fossa, which increases the operation time and reduces the operation efficiency.

[0005] In a first aspect, the present invention provides a puncture device, comprising:

[0006] A puncture unit, wherein a channel is provided inside the puncture unit, the puncture unit comprises a puncture structure and a proximal structure, the puncture structure is connected to the distal end of the proximal structure, the puncture structure is flexible, and the puncture structure is used to perform a puncture operation on the part to be punctured under the drive of an external force according to the development of the puncture unit and the part to be punctured displayed by the three-dimensional display unit;

[0007] A positioning unit connected to the puncture structure, wherein the positioning unit is conductive;

[0008] At least two auxiliary units are arranged at intervals, which are arranged on the proximal structure and are arranged at intervals from the positioning unit, and the auxiliary units are conductive.

[0009] Beneficial effect: By setting a positioning unit and an auxiliary unit, and both the positioning unit and the auxiliary unit are conductors, they can be displayed on a three-dimensional display unit. The flexibility of the puncture structure will deform with the organs in the patient's body, so it is necessary to determine the precise position of the positioning unit relative to the site to be punctured through the auxiliary unit. Specifically, according to the ratio k of the actual distance L1 between the two auxiliary units and the distance L2 between the two auxiliary units on the three-dimensional display unit, the proportional relationship between the actual distance and the distance on the three-dimensional display unit is calculated. Then, the distance between the positioning unit and the site to be punctured in three-dimensional space is measured by the ruler of the three-dimensional display unit. For example, the distance between the positioning unit and the site to be punctured along the X-axis, Y-axis and Z-axis directions can be detected respectively, and then the proportional relationship is used to calculate the actual distance between the positioning unit and the site to be punctured in the X-axis, Y-axis and Z-axis, so that the doctor can move the puncture structure to the site to be punctured at one time, avoiding the situation of adjusting the position of the puncture unit multiple times in the related technology, thereby improving the efficiency of the puncture device moving to the site to be punctured, and then achieving the technical effect of saving operation time.

[0010] In an optional embodiment, the positioning unit and / or the auxiliary unit are arranged in a ring shape, the positioning unit and / or the auxiliary unit have a hollow part, and the puncture unit is arranged in the hollow part.

[0011] Beneficial effect: By limiting the positioning unit and the auxiliary unit to be arranged in a ring shape, the positioning unit and the auxiliary unit both enclose and wrap the puncture unit in a circumferential direction, which can increase the connection area between the positioning unit and the puncture structure and between the auxiliary unit and the proximal structure, thereby achieving the technical effect of improving the connection stability between the positioning unit and the puncture unit and between the auxiliary unit and the puncture unit.

[0012] In an optional embodiment, the puncture device comprises:

[0013] The insulating unit is arranged between the positioning unit and the puncture structure, and between the auxiliary unit and the proximal structure.

[0014] Beneficial effect: The insulating unit can be used to insulate the positioning unit from the puncture structure, and the auxiliary unit from the proximal structure. Based on this, the puncture device can be used as an ablation catheter. Specifically, by energizing the positioning unit and the auxiliary unit to ablate the lesion at the puncture site, the insulating unit can prevent the puncture unit from being electrified and affecting the patient's health, thereby achieving the technical effect of enhancing the protection of the patient, and thus making the puncture device capable of being used for both puncture and ablation, thereby achieving the technical effect of enhancing the functional diversity of the puncture device.

[0015] In an optional implementation, the insulating unit is an insulating tape or an insulating tube.

[0016] Beneficial effect: The insulating tape and the insulating tube have good insulating effect, thereby achieving the technical effect of improving the insulation reliability between the positioning unit and the puncture structure, and between the auxiliary unit and the proximal structure.

[0017] In an optional embodiment, a first through hole is provided at the location of the positioning unit and the puncture unit corresponding to the positioning unit, and the first through hole is communicated with the channel;

[0018] And / or, a second through hole is provided at the auxiliary unit and the puncture unit corresponding to the auxiliary unit, and the second through hole is communicated with the channel;

[0019] And / or, the puncture unit is made of alloy;

[0020] And / or, the positioning unit is made of alloy;

[0021] And / or, the auxiliary unit is made of alloy;

[0022] And / or, the puncture structure comprises a puncture portion, a distal end surface of the puncture portion is an inclined surface, and an angle between the inclined surface and the axis of the puncture unit is an acute angle.

[0023] Beneficial effect: By providing the first through hole and the second through hole, and both the first through hole and the second through hole are connected to the channel, based on the actual needs of the operation, saline can be injected into the channel through the first through hole and the second through hole to specifically cool the positioning unit, the auxiliary unit and the part to be punctured, or heparin saline can be injected into the channel to prevent blood from clotting in the blood vessels, thereby achieving the technical effect of improving the continuity of blood flow and further improving the safety during the operation.

[0024] By limiting the material of the puncture unit, the positioning unit and the auxiliary unit to be alloy, the technical effect of improving the corrosion resistance of the puncture unit, the positioning unit and the auxiliary unit can be achieved.

[0025] By limiting the end surface of the distal end of the puncture portion to an inclined surface, the angle between the inclined surface and the axis of the puncture unit is an acute angle, thereby improving the sharpness of the puncture portion and achieving the technical effect of reducing the puncture difficulty of the puncture device.

[0026] In an optional embodiment, the positioning unit is made of nickel-titanium alloy;

[0027] And / or, the auxiliary unit is made of stainless steel and / or nickel-titanium alloy.

[0028] Beneficial effects: By limiting the material of the positioning unit and the auxiliary unit to nickel-titanium alloy, which has good biocompatibility, high elasticity and high fatigue life, it can avoid causing rejection reactions or allergic reactions, and can increase the service life of the positioning unit and the auxiliary unit, thereby achieving the technical effect of improving the safety of the use of the puncture device.

[0029] In an optional embodiment, when a cross section is made along a direction perpendicular to the axis of the puncture unit, a distal dimension of the proximal structure is smaller than a proximal dimension of the proximal structure.

[0030] Beneficial effect: By limiting the cross section along the axial direction perpendicular to the puncture unit, the distal dimension of the proximal structure is smaller than the proximal dimension of the proximal structure, so that along the axial direction of the puncture unit, the small size of the puncture unit can enter the patient's body first, avoiding the situation where the puncture unit as a whole is large in size and causes harm to the patient during the puncture process, thereby achieving the technical effect of enhancing the protection of the patient.

[0031] In an optional embodiment, the size of the proximal structure is gradually changed along the direction from the distal end of the proximal structure to the proximal end of the proximal structure.

[0032] Beneficial effect: By limiting the direction from the distal end of the proximal structure to the proximal end of the proximal structure, the size of the proximal structure is gradually changed. Based on this, the adaptability of the patient to the proximal size can be further improved, thereby achieving the technical effect of improving the protection of the patient.

[0033] In a second aspect, the present invention further provides a puncture system, comprising:

[0034] The puncture device described above;

[0035] A three-dimensional display unit is communicatively connected with the puncture device and is used to display the development of the puncture structure relative to the part to be punctured.

[0036] Beneficial effect: Since the puncture system includes the puncture device, it has the same effect as the puncture device and will not be described in detail here.

[0037] In a third aspect, the present invention further provides a puncture method, using the above-mentioned puncture system, the puncture method comprising:

[0038] Along the axial direction of the puncture unit, two of the auxiliary units are taken as marking structures, and the actual length of the puncture unit between the two marking structures is measured, which is recorded as L1;

[0039] The puncture device is driven into the patient's body, and the three-dimensional display unit displays the position of the puncture structure;

[0040] Using the ruler of the three-dimensional display unit, measure the length between the two marking structures on the three-dimensional display unit, and record it as L2;

[0041] Calculate the ratio between the actual length and the length measured by the ruler of the three-dimensional display unit according to the ratio between L1 and L2, and record it as k;

[0042] Using the ruler of the three-dimensional display unit to measure the distance between the positioning unit and the site to be punctured in the three-dimensional space, and calculating the actual distance between the positioning unit and the site to be punctured according to the ratio k;

[0043] The puncture structure is driven to move to the site to be punctured.

[0044] Beneficial effect: According to the ratio k of the actual distance L1 of the puncture unit between the two auxiliary units and the length L2 of the puncture unit between the two auxiliary units on the three-dimensional display unit, the proportional relationship between the actual distance and the distance on the three-dimensional display unit is calculated. Then, the distance between the positioning unit and the part to be punctured in the three-dimensional space is measured by the ruler of the three-dimensional display unit. For example, the distance between the positioning unit and the part to be punctured along the X-axis, Y-axis and Z-axis directions can be detected respectively, and then the actual distance between the positioning unit and the part to be punctured along the X-axis, Y-axis and Z-axis can be calculated using the proportional relationship, so that the doctor can drive the handle to move and directly move the positioning unit to the part to be punctured, without the need to adjust the position of the puncture unit multiple times in the related technology, thereby improving the efficiency of the puncture device moving to the part to be punctured, and then achieving the technical effect of saving operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 is a schematic structural diagram of the puncture device of this embodiment;

[0047] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0048] Figure 3 for Figure 1 A partial enlarged schematic diagram of B in the middle;

[0049] Figure 4 is a schematic structural diagram of an auxiliary unit provided at the proximal end of the proximal structure in this embodiment;

[0050] Figure 5 is a schematic structural diagram of an auxiliary unit disposed at the distal end of the proximal structure in this embodiment;

[0051] Figure 6 Schematic diagram of the structure of some auxiliary units and proximal structures in this embodiment.

[0052] Figure 7 This is a schematic diagram of the structure of the connection between the puncture device and the guide wire of this embodiment;

[0053] Figure 8 for Figure 7 A partial enlarged schematic diagram of C in the middle;

[0054] Fig. 9 for Figure 7 A partial enlarged schematic diagram of D in the middle.

[0055] Description of reference numerals:

[0056] 1. puncture unit; 101. channel; 102. first through hole; 103. second through hole;

[0057] 2. Positioning unit; 3. Auxiliary unit; 4. Insulation unit; 5. Handle; 6. Guide wire; 7. Luer connector; 8. Radio frequency interface. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0059] Combine the following Figures 1 to 9 , describing an embodiment of the present invention.

[0060] According to an embodiment of the present invention, on the one hand, a puncture device is provided, comprising:

[0061] The puncture unit 1 has a channel 101 inside. The puncture unit 1 includes a puncture structure and a proximal structure. The puncture structure is connected to the distal end of the proximal structure. The puncture structure is flexible and is used to perform a puncture operation on the part to be punctured under the drive of an external force according to the puncture unit 1 and the development of the part to be punctured displayed by the three-dimensional display unit;

[0062] A positioning unit 2 is connected to the puncture structure, and the positioning unit 2 is conductive;

[0063] It comprises at least two auxiliary units 3 which are spaced apart from each other, are arranged on the proximal structure, and are spaced apart from the positioning unit 2, and the auxiliary units 3 are conductive.

[0064] In the puncture device of this embodiment, by setting the positioning unit 2 and the auxiliary unit 3, and the positioning unit 2 and the auxiliary unit 3 are both conductors, it is possible to display on the three-dimensional display unit. The flexibility of the puncture structure will deform with the organs in the patient's body, so it is necessary to determine the precise position of the positioning unit 2 relative to the part to be punctured by the auxiliary unit 3. Specifically, according to the ratio k of the actual distance L1 between the two auxiliary units 3 and the distance L2 between the two auxiliary units 3 on the three-dimensional display unit, the proportional relationship between the actual distance and the distance on the three-dimensional display unit is calculated. Then, the distance between the positioning unit 2 and the part to be punctured in the three-dimensional space is measured by the scale of the three-dimensional display unit. For example, the distance between the positioning unit 2 and the part to be punctured along the X-axis, Y-axis and Z-axis directions can be detected respectively, and then the actual distance between the positioning unit 2 and the part to be punctured along the X-axis, Y-axis and Z-axis can be calculated using the proportional relationship, so that the doctor can drive the handle 5 to move and move the puncture structure to the part to be punctured at one time, avoiding the situation of adjusting the position of the puncture structure multiple times in the related technology, thereby improving the efficiency of moving the puncture device to the part to be punctured, and then achieving the technical effect of saving operation time.

[0065] In this embodiment, the distal end refers to the end away from the doctor when the puncture device is placed in the patient's body, and the proximal end refers to the end close to the doctor.

[0066] In addition, in this embodiment, the puncture device is used in cardiac radiofrequency ablation, and the puncture site can be the oval fossa. Of course, in other embodiments, the puncture site can be adjusted according to actual needs, for example, it can be used in an operation to treat pulmonary hypertension (right-to-left shunt) or in an operation to treat left heart failure (left-to-right shunt).

[0067] In addition, combined Figure 2 , Figure 6 and Figure 8 As shown, in this embodiment, two auxiliary units 3 are provided. Of course, in other embodiments, the number of auxiliary units 3 can be adjusted according to different designs of the puncture device.

[0068] In addition, combined Figure 6As shown, the positioning unit 2 and the auxiliary unit 3 are both arranged in an annular shape, and the positioning unit 2 and the auxiliary unit 3 have a hollow portion, and the puncture unit 1 is arranged in the hollow portion. Based on this, the positioning unit 2 and the auxiliary unit 3 both enclose and wrap the puncture unit 1 along the circumferential direction, which can increase the connection area between the positioning unit 2 and the puncture structure and between the auxiliary unit 3 and the proximal structure, thereby achieving the technical effect of improving the connection stability between the positioning unit 2 and the puncture unit 1 and between the auxiliary unit 3 and the puncture unit 1.

[0069] The positioning unit 2 and the puncture structure and the auxiliary unit 3 and the proximal structure can be fixed by welding. As a convertible embodiment, the positioning unit 2 and the puncture structure and the auxiliary unit 3 and the proximal structure can also be fixed by other methods, which are not limited here.

[0070] As a convertible implementation, it is also possible that only the positioning unit 2 is arranged in a ring shape, or only the auxiliary unit 3 is arranged in a ring shape.

[0071] As a convertible implementation, it is also possible that, depending on the design of the puncture device, the positioning unit 2 and the auxiliary unit 3 are not arranged in a ring shape.

[0072] In addition, the materials of the puncture unit 1, the positioning unit 2 and the auxiliary unit 3 can all be alloys. Based on this, the technical effect of improving the corrosion resistance of the puncture unit 1, the positioning unit 2 and the auxiliary unit 3 can be achieved.

[0073] Among them, the material of the positioning unit 2 and the auxiliary unit 3 can both be nickel-titanium alloy, which has good biocompatibility, high elasticity and high fatigue life, avoids causing rejection reactions or allergic reactions, and can increase the service life of the positioning unit 2 and the auxiliary unit 3, thereby achieving the technical effect of improving the safety of the use of the puncture device.

[0074] As a changeable embodiment, the auxiliary unit 3 may be made of stainless steel.

[0075] Furthermore, the proximal structure is made of stainless steel, and the puncture structure is made of an elastic unit, such as nickel-titanium alloy or platinum-iridium alloy. Of course, in other embodiments, the material of the puncture structure can also be adjusted as needed.

[0076] In this embodiment, the proximal structure is fixedly connected to the puncture structure, thereby achieving the technical effect of improving the connection stability between the proximal structure and the puncture structure. Of course, in other embodiments, the proximal structure and the puncture structure may be detachably connected according to different designs of the puncture device.

[0077] Of course, in other embodiments, the materials of the puncture unit 1, the positioning unit 2 and the auxiliary unit 3 may be adjusted according to different designs of the puncture device.

[0078] In other embodiments, the positioning unit 2 may be limited to being a positioning unit 2 made of nickel-titanium alloy, or the auxiliary unit 3 may be limited to being an auxiliary unit 3 made of nickel-titanium alloy.

[0079] In addition, combined Figure 4 and Figure 5 As shown, in this embodiment, the puncture device includes:

[0080] The insulating unit 4 is arranged between the positioning unit 2 and the puncture structure, and between the auxiliary unit 3 and the proximal structure.

[0081] The insulating unit 4 can insulate the positioning unit 2 from the puncture structure, and the auxiliary unit 3 from the proximal structure. Based on this, the puncture device can be used as an ablation catheter. Specifically, by energizing the positioning unit 2 and the auxiliary unit 3 to ablate the lesion at the puncture site, the insulating unit 4 can prevent the puncture unit 1 from being electrified and affecting the patient's health, thereby achieving the technical effect of enhancing the protection of the patient, and thus making the puncture device both for puncture and for ablation, so as to achieve the technical effect of enhancing the functional diversity of the puncture device.

[0082] The insulating unit 4 is an insulating tape, which has a good insulating effect, thereby achieving the technical effect of improving the insulation reliability between the positioning unit 2 and the puncture structure, and between the auxiliary unit 3 and the proximal structure. As a convertible embodiment, the insulating unit 4 can also be an insulating tube, or an insulating unit made of other insulating materials.

[0083] Of course, in other embodiments, depending on the design of the puncture device, the puncture device may not include the insulating unit 4, and the puncture device only performs the puncture operation.

[0084] In addition, combined Figure 2 and Figures 4 to 6 As shown, in this embodiment, the positioning unit 2 and the puncture unit 1 corresponding to the positioning unit 2 are provided with a first through hole 102, and the first through hole 102 is communicated with the channel 101;

[0085] The auxiliary unit 3 and the puncture unit 1 corresponding to the auxiliary unit 3 are provided with a second through hole 103 , and the second through hole 103 is communicated with the channel 101 .

[0086] By providing the first through hole 102 and the second through hole 103, and both the first through hole 102 and the second through hole 103 are connected to the channel 101. Based on this, according to the needs of the actual operation, physiological saline can be injected into the channel 101 through the first through hole 102 and the second through hole 103 to specifically cool the positioning unit 2, the auxiliary unit 3 and the part to be punctured, or heparin physiological saline can be injected into the channel 101 to prevent blood from clotting in the blood vessels, thereby achieving the technical effect of improving the continuity of blood flow and further improving the safety during the operation.

[0087] Of course, in other embodiments, depending on the design of the puncture device, the first through hole 102 and the second through hole 103 may not be provided, and the saline solution and heparin saline solution may be transmitted into the patient's body only through the channel 101 .

[0088] In addition, combined Figure 2 , Figure 6 and Figure 8 As shown, the puncture structure includes a puncture portion, the distal end face of the puncture portion is an inclined surface, and the angle α between the inclined surface and the axis of the puncture unit 1 is an acute angle. Based on this, the sharpness of the puncture portion can be improved, thereby achieving the technical effect of reducing the puncture difficulty of the puncture device.

[0089] Of course, in other embodiments, the angle between the inclined surface and the axis of the puncture unit 1 is adjusted according to different designs of the puncture device, and no excessive restrictions are made here.

[0090] In other implementations, depending on the design of the puncture device, it may be limited that only the positioning unit 2 and the puncture unit 1 corresponding to the positioning unit 2 are provided with a first through hole 102, and the first through hole 102 is connected to the channel 101, or only the auxiliary unit 3 and the puncture unit 1 corresponding to the auxiliary unit 3 are provided with a second through hole 103, and the second through hole 103 is connected to the channel 101, or only the puncture unit 1 is limited to be a puncture unit 1 made of an alloy, or only the positioning unit 2 is limited to be a positioning unit 2 made of an alloy, or only the auxiliary unit 3 is limited to be an auxiliary unit 3 made of an alloy, or only the puncture structure is limited to include a puncture portion, the end face of the distal end of the puncture portion is an inclined surface, and the angle between the inclined surface and the axis of the puncture unit 1 is an acute angle.

[0091] In addition, in this embodiment, when a cross section is made along a direction perpendicular to the axis of the puncture unit 1, the distal end dimension of the proximal structure is smaller than the proximal end dimension of the proximal structure. Figure 4 In the X-axis direction shown, the right end size of the proximal structure is smaller than the left end size of the proximal structure, so that along the axial direction of the puncture unit 1, the small size of the puncture unit 1 enters the patient's body first, avoiding the puncture unit 1 as a whole being large in size and causing harm to the patient during the puncture process, thereby achieving the technical effect of enhancing the protection of the patient.

[0092] Preferably, the size of the proximal structure is gradually changed along the direction from the distal end of the proximal structure to the proximal end of the proximal structure. Based on this, the adaptability of the patient to the proximal size can be further improved, thereby achieving the technical effect of improving the protection of the patient.

[0093] Of course, in other embodiments, according to different designs of the puncture device, a cross section may be made along a direction perpendicular to the axis of the puncture unit 1 to adjust the size change of the proximal structure.

[0094] In addition, combined Figure 1 , Figure 3 , Figure 7 and Fig. 9 As shown, in this embodiment, a handle 5 is connected to the proximal end of the puncture unit 1 so as to drive the movement of the puncture unit 1 through the handle 5 .

[0095] Furthermore, the handle 5 is provided with a Luer connector 7 and a radio frequency interface 8 connected to the channel. Specifically, the Luer connector 7 is used to connect a container containing saline or heparin saline, and the radio frequency interface 8 is used for a three-dimensional display unit or a radio frequency therapeutic device. Among them, the radio frequency therapeutic device can provide radio frequency ablation energy not higher than 100W. The radio frequency therapeutic device can achieve atrial septostomy, specifically, entering from the right atrium of the patient, and making a stoma at the atrial septum, thereby forming a shunt between the left and right atria, and can also ablate the atrial septum to treat heart failure caused by decreased left atrial blood volume.

[0096] Of course, in other embodiments, the radiofrequency ablation energy can be adjusted according to the design of the puncture device.

[0097] In other embodiments, the structure provided on the handle 5 can be adjusted according to the design of the puncture device, for example, it can be a structure other than the Luer connector 7 and the radio frequency interface 8.

[0098] In addition, in this embodiment, the taper of the Luer connector 7 is 6%. Of course, in other embodiments, the taper of the Luer connector 7 can be adjusted according to the different designs of the puncture device.

[0099] In other embodiments, the handle 5 may not be provided with the Luer connector 7, and other common pipes may be used. Compared with other embodiments, the Luer connector 7 in this embodiment can improve the tightness of the connection between the puncture unit 1 and the container, prevent the leakage of saline or heparin saline, and thus achieve the technical effect of improving the transmission stability of saline or heparin saline.

[0100] According to an embodiment of the present invention, on the other hand, a puncture system is provided, comprising:

[0101] The puncture device of this embodiment;

[0102] The three-dimensional display unit is connected to the puncture device for displaying the appearance of the puncture structure relative to the part to be punctured. The three-dimensional display unit is a three-dimensional cardiac electrophysiological mapping system.

[0103] In addition, in this embodiment, the puncture system further includes a guide wire 6, which is disposed in the channel 101. Specifically, the guide wire 6 is first placed in the patient, and then the doctor inserts the channel 101 of the puncture device into the patient's body along the guide wire 6. The guide wire 6 is a mature technology and will not be described in detail here.

[0104] According to an embodiment of the present invention, on the other hand, a puncture method is also provided. Using the puncture system of this embodiment, the puncture method includes:

[0105] Along the axial direction of the puncture unit 1, two auxiliary units 3 are taken as marking structures, and the actual length of the puncture unit 1 between the two marking structures is measured, which is recorded as L1;

[0106] The puncture device is driven into the patient's body, and the three-dimensional display unit displays the position of the puncture structure;

[0107] The puncture device enters the patient's body, and the three-dimensional display unit visualizes the position of the puncture structure;

[0108] Use the ruler of the three-dimensional display unit to measure the length between the two marking structures on the three-dimensional display unit, which is recorded as L2;

[0109] The ratio between the actual length and the length measured by the ruler of the three-dimensional display unit is calculated according to the ratio between L1 and L2, and is recorded as k;

[0110] The distance between the positioning unit 2 and the site to be punctured in the three-dimensional space is measured using the scale of the three-dimensional display unit, and the actual distance between the positioning unit 2 and the site to be punctured is calculated according to the ratio k;

[0111] The puncture structure is driven to move to the site to be punctured.

[0112] Based on this, the proportional relationship between the actual distance and the distance on the three-dimensional display unit can be calculated according to the ratio k of the actual distance L1 of the puncture unit 1 between the two auxiliary units 3 and the length L2 of the puncture unit 1 between the two auxiliary units 3 on the three-dimensional display unit.

[0113] Then, the distance between the positioning unit 2 and the part to be punctured in the three-dimensional space is measured by the scale of the three-dimensional display unit. For example, the distance between the positioning unit 2 and the part to be punctured along the X-axis, Y-axis and Z-axis directions can be detected respectively, and then the actual distance between the positioning unit 2 and the part to be punctured along the X-axis, Y-axis and Z-axis can be calculated using the proportional relationship, so that the doctor can drive the handle 5 to move and directly and once move the puncture structure to the part to be punctured, avoiding the situation of adjusting the position of the puncture unit 1 multiple times in the related technology, thereby improving the efficiency of the puncture device moving to the part to be punctured, and then achieving the technical effect of saving operation time.

[0114] The three-dimensional display unit does not display the directions of the X-axis, Y-axis and Z-axis, and the directions of the X-axis, Y-axis and Z-axis may be limited according to the doctor's habits.

[0115] Specifically, L1 refers to Figure 2 The distance between the rightmost end of the auxiliary unit 3 located at the proximal end and the leftmost end of the auxiliary unit 3 located at the distal end.

[0116] In addition, using the scale of the three-dimensional display unit to measure the distance between the positioning unit 2 and the site to be punctured in three-dimensional space, and calculating the actual distance between the positioning unit 2 and the site to be punctured according to the ratio k is a mature calculation method, which will not be elaborated here.

[0117] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A puncture device, characterized in that: include: A puncture unit (1), wherein a channel (101) is provided inside the puncture unit (1), wherein the puncture unit (1) comprises a puncture structure and a proximal structure, wherein the puncture structure is connected to the distal end of the proximal structure, wherein the puncture structure is flexible, and is used to perform a puncture operation on the part to be punctured under the drive of an external force according to the puncture unit (1) and the image of the part to be punctured displayed by a three-dimensional display unit; A positioning unit (2) connected to the puncture structure, wherein the positioning unit (2) is conductive; It comprises at least two auxiliary units (3) arranged at intervals, which are arranged on the proximal structure and are arranged at intervals from the positioning unit (2), and the auxiliary units (3) are conductive.

2. The puncture device according to claim 1, characterized in that: The positioning unit (2) and / or the auxiliary unit (3) are arranged in a ring shape, and the positioning unit (2) and / or the auxiliary unit (3) have a hollow portion, and the puncture unit (1) is arranged in the hollow portion.

3. The puncture device according to claim 1, characterized in that: The puncture device comprises: The insulating unit (4) is arranged between the positioning unit (2) and the puncture structure, and between the auxiliary unit (3) and the proximal structure.

4. The puncture device according to claim 3, characterized in that: The insulating unit (4) is an insulating tape or an insulating tube.

5. The puncture device according to any one of claims 1 to 4, characterized in that: The positioning unit (2) and the puncture unit (1) corresponding to the positioning unit (2) are provided with a first through hole (102), and the first through hole (102) is connected to the channel (101); And / or, the auxiliary unit (3) and the puncture unit (1) corresponding to the auxiliary unit (3) are provided with a second through hole (103), and the second through hole (103) is connected to the channel (101); And / or, the puncture unit (1) is made of an alloy; And / or, the positioning unit (2) is the positioning unit (2) made of an alloy; And / or, the auxiliary unit (3) is the auxiliary unit (3) made of an alloy; And / or, the puncture structure comprises a puncture portion, the end surface of the distal end of the puncture portion is an inclined surface, and the angle between the inclined surface and the axis of the puncture unit (1) is an acute angle.

6. The puncture device according to claim 5, characterized in that: The positioning unit (2) is made of nickel-titanium alloy; And / or, the auxiliary unit (3) is made of stainless steel and / or nickel-titanium alloy.

7. The puncture device according to any one of claims 1 to 4, characterized in that: Taking a cross section along a direction perpendicular to the axis of the puncture unit (1), the distal dimension of the proximal structure is smaller than the proximal dimension of the proximal structure.

8. The puncture device according to claim 7, characterized in that: Along the direction from the distal end of the proximal structure to the proximal end of the proximal structure, the size of the proximal structure is gradually changed.

9. A puncture system, characterized in that: include: The puncture device according to any one of claims 1 to 8; A three-dimensional display unit is communicatively connected with the puncture device and is used to display the development of the puncture structure relative to the part to be punctured.

10. A puncture method, using the puncture system according to claim 9, characterized in that: The puncture method comprises: Along the axial direction of the puncture unit (1), two of the auxiliary units (3) are taken as marking structures, and the actual length of the puncture unit (1) between the two marking structures is measured and recorded as L1; The puncture device is driven into the patient's body, and the three-dimensional display unit displays the position of the puncture structure; Using the ruler of the three-dimensional display unit, measure the length between the two marking structures on the three-dimensional display unit, and record it as L2; Calculate the ratio between the actual length and the length measured by the ruler of the three-dimensional display unit according to the ratio between L1 and L2, and record it as k; Using the scale of the three-dimensional display unit to measure the distance between the positioning unit (2) and the site to be punctured in the three-dimensional space, and calculating the actual distance between the positioning unit (2) and the site to be punctured according to the ratio k; The puncture structure is driven to move to the site to be punctured.

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