Long-handled probe interventional ultrasound puncture depth control device

Abstract

The present invention provides a long-handled probe interventional ultrasonic puncture depth control device, which relates to the field of interventional ultrasonic instruments in medical instruments, and includes a puncture needle guide device and a depth control device; the puncture needle guide device is provided with a puncture guide cylinder for guiding the puncture needle, and a probe fixing wing for connecting a long-handled ultrasonic probe is provided below the puncture guide cylinder; the depth control device is provided with a clamping device for fixing the position of the puncture needle, and is also provided with a connecting device for connecting to the puncture needle guide device. By providing the puncture needle guide device and the depth control device, the position of the puncture needle in the puncture guide cylinder can be conveniently limited, so that during the surgical operation, the puncture needle can be locked according to the treatment needs, freeing the doctor's hands for other diagnosis and treatment operations. The depth control device can be conveniently installed and removed during the operation without affecting the ultrasonic detection and puncture operation.

Description

Technical Field

[0001] The invention relates to the field of interventional ultrasonic instruments in medical instruments, in particular to an interventional ultrasonic puncture depth control device with a long-handled probe. Background Art

[0002] Interventional ultrasound is a technology developed on the basis of ultrasound imaging to further meet the needs of clinical diagnosis and treatment. It is an extension and development of ultrasound clinical application. Its main features are: under the dynamic monitoring or guidance of real-time ultrasound, direct percutaneous puncture to accurately place the puncture needle or catheter into the lesion, cystic cavity or duct structure to complete various puncture biopsy, angiography, drainage, injection treatment and other operations. Compared with surgical operations, this technology has the advantages of less trauma, faster postoperative recovery of patients, and definite diagnosis and treatment effects. It is widely used in clinical practice, such as ultrasound-guided puncture biopsy of space-occupying lesions of organs such as vagina, uterus, ovary, intestine and prostate; ultrasound-guided puncture sclerotherapy; ultrasound-guided microwave, radiofrequency and other ablation treatments for tumors. During the puncture process, in order to avoid puncture damage to important structures such as surrounding organs, tissues, nerves and blood vessels inside the target lesion, the puncture depth is a factor that the operating physician must consider.

[0003] Especially in the following cases, accurate control of puncture depth directly affects the success rate of puncture diagnosis and treatment and the degree of damage to surrounding tissues:

[0004] 1. During the puncture diagnosis and treatment of cystic tumors in the pelvic cavity or originating from pelvic organs, after the cystic fluid is extracted, the cystic wall collapses. The change in the depth of the puncture needle may cause the puncture needle to pierce the cystic wall or withdraw from the cystic cavity, causing the puncture needle to reach a position outside the cystic cavity, resulting in failure of drug injection treatment or even serious consequences. For example, injection of drugs into the interstitial space of the tissue may cause inflammatory reactions or even tissue necrosis.

[0005] 2. During ultrasound-guided puncture and ablation treatment of tumors, ultrasound angiography technology can be used to determine the areas where the tumor has not been completely ablated. At this time, it is necessary to accurately perform further ablation treatment on these residual lesions. Fixing the puncture depth can help completely ablate the residual lesions and reduce damage to surrounding normal tissues.

[0006] 3. During the puncture biopsy of smaller lesions, the change in the depth of the puncture needle causes the puncture needle to deviate from the lesion, resulting in failure of biopsy.

[0007] 4. For puncture biopsy and ablation treatment of lesions with rich internal blood supply and special parts, such as the throat, thyroid and parathyroid glands, and liver hilum, too deep puncture depth may cause damage to important structures such as the surrounding trachea, esophagus, recurrent laryngeal nerve, portal vein, etc., while too shallow puncture depth may lead to incomplete ablation treatment. However, accurate grasping of puncture depth has always been a technical problem that has plagued interventional ultrasound physicians. Due to the inability to grasp the puncture depth, some interventional ultrasound risk assessments are too high and cannot be implemented. During interventional ultrasound diagnosis and treatment, the operating doctor usually fixes the puncture needle by hand to prevent the puncture needle from entering too deep or exiting the puncture target due to misoperation, resulting in damage to surrounding important organs or affecting the efficacy. However, in actual operation, it is difficult for interventional ultrasound physicians to always keep the depth of the puncture needle unchanged, and one hand used to fix the puncture needle will inevitably affect other complex diagnosis and treatment operations that require both hands. Therefore, accurate control of the puncture depth is very important for improving the success rate of interventional ultrasound diagnosis and treatment and effectively reducing complications. Currently, among the puncture devices used for interventional ultrasound in China, no manufacturer provides equipment that can be used to fix, control and fine-tune the depth of the puncture needle.

[0008] Chinese patent document CN 103340655 A records a puncture needle detection device based on ultrasonic detection, including an ultrasonic probe and a puncture needle. The ultrasonic probe is connected to a control unit, a first angle sensor is installed on the ultrasonic probe, and the end of the puncture needle is fixedly connected to a second angle sensor. The first angle sensor serves as a reference for the second angle sensor. The invention uses an angle sensor to assist in adjusting the insertion angle of the puncture tube, improves the accuracy of the insertion position and insertion depth of the puncture needle, facilitates the operation of medical personnel, and improves medical efficiency. However, this structure still requires manual adjustment by the doctor, and still has a high degree of operational difficulty. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide a long-handled probe interventional ultrasound puncture depth control device, which can provide guidance for the puncture needle and control the depth of the puncture needle, freeing up one hand of the doctor for other operations. In the preferred solution, while controlling the puncture needle, the depth of the puncture needle can also be accurately fine-tuned according to the surgical situation.

[0010] In order to solve the above technical problems, the technical solution adopted by the present invention is: a long-handled probe interventional ultrasonic puncture depth control device, which includes a puncture needle guide device and a depth control device;

[0011] The puncture needle guide device is provided with a puncture guide cylinder for guiding the puncture needle, and a probe fixing wing for connecting a long-handled ultrasonic probe is provided below the puncture guide cylinder;

[0012] The depth control device is provided with a clamping device for fixing the position of the puncture needle, and is also provided with a connecting device for connecting with the puncture needle guiding device.

[0013] In a preferred solution, a control fixing wing opening to both sides is provided at the tail of the puncture guide tube;

[0014] The connecting device of the depth control device is provided with an inverted "U"-shaped connecting cover body, the connecting cover body is clamped with the puncture guide tube, the two sides of the connecting cover body are hinged with the fixed arm, the end of the fixed arm is provided with a fixed end head, the fixed end head is provided with a fixing groove for accommodating the control fixed wing, and a fixing barb is provided on the edge of the fixing groove, and the fixed end head is connected to the control fixed wing.

[0015] In a preferred solution, the fixing barb extends from the edge of the fixing groove to the turning portion of the control fixing wing, and the fixing barb is hooked on the turning portion of the control fixing wing.

[0016] In a preferred solution, a fixing protrusion is provided on the inner side of the connecting cover body, and a positioning groove is provided at a corresponding position of the puncture needle guide device.

[0017] In a preferred solution, the clamping device is a clip provided with a spring, and a friction layer is provided at the position where the clip contacts the puncture needle.

[0018] In a preferred embodiment, in the clamping device, the fixed plate is fixedly connected to the clamping and fixing section of the connecting member, the connecting member is connected to the connecting cover body, the fixed plate is connected to the movable plate through a pin shaft arranged in the middle, and magnets that attract each other are arranged at both ends of the fixed plate and the movable plate.

[0019] In a preferred embodiment, a friction layer is provided at the position where the clamping device contacts the puncture needle.

[0020] In a preferred embodiment, the fixed plate and movable plate are at least two groups, wherein the friction layer of one group is rubber or silicone, and the puncture needle cannot move axially in the clamped state, and the friction layer of the other group is a felt pad, and the puncture needle can move axially after overcoming the resistance in the clamped state.

[0021] In a preferred embodiment, the clamping device is fixedly connected to the clamping and fixing section of the connecting piece, the connecting piece is slidably connected to the connecting cover, a threaded portion is provided on the connecting piece, a rotatable stud is provided on the connecting cover, the stud is threadedly connected to the threaded portion, and rotating the threaded portion causes the connecting piece to move axially.

[0022] In a preferred embodiment, in the connecting member, the vertical clamping and fixing section is fixedly connected to the arc-shaped sliding section through a transition connecting section;

[0023] A slide groove is arranged on the top of the connecting cover body, and the sliding section is slidably installed in the slide groove. The two ends of the stud are rotatably supported by the first supporting seat and the second supporting seat, and the sliding section at least slides through the first supporting seat.

[0024] The present invention provides a long-handled probe interventional ultrasonic puncture depth control device, which can conveniently limit the position of the puncture needle in the puncture guide tube through the puncture needle guide device and the depth control device, so that during the surgical operation, the puncture needle can be locked according to the treatment needs, freeing the doctor's hands for other diagnosis and treatment operations. The depth control device can be easily installed and removed during the operation without affecting the ultrasonic detection and puncture operation. In the preferred scheme, the stud is set to accurately fine-tune the depth of the puncture needle during the puncture process. For example, during the suction process of the cystic fluid, the position of the puncture needle tip can be adjusted accordingly as the volume of the cyst changes. The adjustment accuracy error can be less than 0.1mm. By setting the anti-gap structure, the virtual position in the adjustment process can be reduced, and the adjustment accuracy can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] Figure 1 It is a schematic diagram of the overall structure of the parts of the present invention.

[0027] Figure 2 It is a stereoscopic view of the puncture needle guide device in the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of the depth control device in the present invention.

[0029] Figure 4 for Figure 3 A-direction view.

[0030] Figure 5 It is a three-dimensional diagram of the connecting piece in the present invention.

[0031] Figure 6 for Figure 3 BB cross-sectional view.

[0032] Figure 7 for Figure 3 Schematic diagram of CC cross-section.

[0033] Figure 8 for Figure 3 DD cross-sectional diagram.

[0034] In the figure: depth control device 1, first clamping device 11, fixed plate 111, pin 112, magnet 113, friction layer 114, movable plate 115, second clamping device 11', connecting piece 12, clamping fixed section 121, transition connecting section 122, sliding section 123, threaded portion 124, stud 13, first supporting seat 14, second supporting seat 14', connecting cover 15, fixed protrusion 151, slide groove 152, fixed arm hinge seat 16, fixed arm 17, fixed end 18, fixed groove 181, fixed barb 182, puncture needle guide device 2, probe fixed wing 21, puncture guide tube 22, control fixed wing 23, positioning groove 24, long handle ultrasonic probe 3, puncture needle 4. DETAILED DESCRIPTION

[0035] like Figure 1 A long-handled probe interventional ultrasonic puncture depth control device includes a puncture needle guide device 2 and a depth control device 1;

[0036] like Figure 2 In the embodiment, the puncture needle guide device 2 is provided with a puncture guide cylinder 22 for guiding the puncture needle 4, and a probe fixing wing 21 for connecting the long-handled ultrasonic probe 3 is provided below the puncture guide cylinder 22;

[0037] like Figures 3 to 8 In the embodiment, the depth control device 1 is provided with a clamping device for fixing the position of the puncture needle 4, and also provided with a connecting device for connecting with the puncture needle guide device 2. With this structure, during the ultrasonic interventional surgery, the position of the puncture needle 4 can be fixed by the clamping device, thereby freeing one hand of the doctor for other operations.

[0038] The preferred solution is Figure 2 , 4 In the embodiment, a control fixing wing 23 opened to both sides is provided at the tail of the puncture guide tube 22; the control fixing wing 23 is in a horizontal state.

[0039] The connecting device of the depth control device 1 is provided with an inverted "U"-shaped connecting cover 15, the connecting cover 15 is clamped with the puncture guide tube 22, and the two sides of the connecting cover 15 are hinged with the fixed arm 17 through the fixed arm hinge seat 16. The fixed arm 17 is roughly in a horizontal state. The end of the fixed arm 17 is provided with a fixed end 18, and the fixed end 18 is provided with a fixed groove 181 for accommodating the control fixed wing 23. A fixed barb 182 is provided on the edge of the fixed groove 181, and the fixed end 18 is sleeved on the control fixed wing 23.

[0040] The preferred solution is Figure 4In the embodiment, the fixing barb 182 extends from the edge of the fixing groove 181 to the turning part of the control fixing wing 23, and the fixing barb 182 is hooked on the turning part of the control fixing wing 23. With this structure, the connecting cover body 15 is fixedly connected with the control fixing wing 23, so that the connecting cover body 15 and the puncture needle guide device are connected as a whole, and the installation and removal are very convenient.

[0041] The preferred solution is Figure 2 , 3 In 6, a fixing protrusion 151 is provided on the inner side of the connecting cover 15, and a positioning groove 24 is provided at a corresponding position of the puncture needle guide device 2. With this structure, a more secure installation is ensured.

[0042] In an optional solution, the clamping device is a spring-equipped clip, and a friction layer is provided at the position where the clip contacts the puncture needle 4. The structure of the clip facilitates the installation of the depth control device, and the depth control device 1 can be easily installed even during the puncture operation.

[0043] The preferred solution is Figure 3 , 5 7, in the clamping device, the fixing piece 111 is fixedly connected to the clamping fixing section 121 of the connecting member 12, the connecting member 12 is connected to the connecting cover 15, the fixing piece 111 is connected to the movable piece 115 through a pin 112 arranged in the middle, and magnets 113 that attract each other are arranged at both ends of the fixing piece 111 and the movable piece 115. With this structure, the operation is more convenient, preferably, as Figure 7 As shown in , the upper part of the movable sheet 115 is provided with a bent structure, so that the position of the clamping needle 4 below can be opened wider, and the operation is more convenient. The structure of the magnets 113 that attract each other at both ends of the fixed sheet 111 and the movable sheet 115 is adopted, so that the clamping device can be fixed in both open and closed states, and the operation is more convenient. The magnets 113 that attract each other include two magnet blocks with different polarities, or a magnet block and a ferromagnet that attract each other. At least a larger magnetic force is used at the bottom of the fixed sheet 111 and the movable sheet 115 to ensure that the clamping force is sufficient.

[0044] The preferred solution is Figure 7In the embodiment, a friction layer is provided at the position where the clamping device contacts the puncture needle 4. In the preferred embodiment, the fixed sheet 111 and the movable sheet 115 are at least two groups, the friction layer of one group is rubber or silicone, and the puncture needle 4 cannot move axially in the clamping state, and the friction layer of the other group is a felt pad, and the puncture needle 4 can move axially after overcoming resistance in the clamping state. This structure is adopted to cope with different operation modes. When the puncture needle 4 needs to be adjusted manually, the clamping device using the felt pad as the friction layer is closed. Since the friction force of the felt pad is small, for example, it is enough to ensure that the puncture needle will not move under the action of gravity. When adjustment is required, the depth adjustment is performed by hand. When the following precise adjustment method is required, the clamping device using rubber or silicone as the friction layer is closed, so that when the connecting member 12 is precisely displaced, the clamping device can drive the puncture needle to make precise displacement.

[0045] The preferred solution is Figure 3 , 5 In the embodiment, the clamping device is fixedly connected to the clamping and fixing section 121 of the connecting member 12, the connecting member 12 is slidably connected to the connecting cover 15, a threaded portion 124 is provided on the connecting member 12, a rotatable stud 13 is provided on the connecting cover 15, the stud 13 is threadedly connected to the threaded portion 124, and the threaded portion 124 is rotated to move the connecting member 12 axially. With this structure, the connecting member 12 can be driven to slide forward and backward by rotating the stud, thereby accurately adjusting the depth of the puncture needle.

[0046] The preferred solution is Figure 5 In the connecting member 12, the vertical clamping and fixing section 121 is fixedly connected to the substantially horizontal arc-shaped sliding section 123 through the transition connecting section 122, and the threaded portion 124 is arranged on the top of the sliding section 123;

[0047] like Figure 3 In the embodiment, a slide groove 152 is provided at the top of the connecting cover 15, and the sliding section 123 is slidably installed in the slide groove 152. The two ends of the stud 13 are rotatably supported by the first support seat 14 and the second support seat 14', and the sliding section 123 at least slides through the first support seat 14. With this structure, the volume of the entire device can be reduced to avoid interference and facilitate operation.

[0048] When using, Figure 1In the process, the puncture needle guide device 2 is installed, the depth control device 1 is connected to the puncture needle guide device 2 through the fixed arm 17 and the connecting cover 15, the puncture needle 4 is inserted into the puncture guide tube 22, the first clamping device 11 is clamped with the puncture needle 4, the friction layer 114 of the first clamping device 11 is made of felt pads, the puncture position of the puncture needle 4 is detected by the long-handled ultrasonic probe 3, and the depth of the puncture needle 4 is manually controlled. When the puncture position is reached, the puncture depth of the puncture needle 4 is limited, and the doctor uses the free hand to perform other operations, such as removing the needle core, connecting the suction device or syringe, etc. According to the surgical process, when the position of the puncture needle 4 needs to be accurately moved, the second clamping device 11' is closed, the stud 13 is rotated, and the stud 13 is threadedly connected with the threaded portion 124, driving the sliding section 123 of the connecting member 12 to slide along the slide groove 152, thereby accurately adjusting the puncture depth of the puncture needle 4.

[0049] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A long-handled probe interventional ultrasonic puncture depth control device, characterized by: It comprises a puncture needle guide device (2) and a depth control device (1); The puncture needle guide device (2) is provided with a puncture guide tube (22) for guiding the puncture needle (4), and a probe fixing wing (21) for connecting a long-handled ultrasonic probe (3) is provided below the puncture guide tube (22); The depth control device (1) is provided with a clamping device for fixing the position of the puncture needle (4), and is also provided with a connecting device for connecting to the puncture needle guide device (2); A control fixing wing (23) opened to both sides is provided at the tail of the puncture guide tube (22); The connecting device of the depth control device (1) is provided with an inverted "U"-shaped connecting cover (15), the connecting cover (15) is clamped with the puncture guide tube (22), the two sides of the connecting cover (15) are hinged with the fixed arm (17), the end of the fixed arm (17) is provided with a fixed end (18), the fixed end (18) is provided with a fixing groove (181) for accommodating the control fixed wing (23), the edge of the fixing groove (181) is provided with a fixing barb (182), and the fixed end (18) is connected to the control fixed wing (23); The clamping device is a clamp provided with a spring; In the clamping device, the fixing plate (111) is fixedly connected to the clamping fixing section (121) of the connecting member (12), the connecting member (12) is connected to the connecting cover (15), the fixing plate (111) is connected to the movable plate (115) via a pin shaft (112) provided in the middle, and magnets (113) that attract each other are provided at both ends of the fixing plate (111) and the movable plate (115); A friction layer is provided at a position where the clamping device contacts the puncture needle (4); The fixed sheet (111) and the movable sheet (115) are at least two groups, wherein the friction layer of one group is rubber or silicone, and the puncture needle (4) cannot move axially in the clamped state, and the friction layer of the other group is a felt pad, and the puncture needle (4) can move axially after overcoming resistance in the clamped state; The clamping device is fixedly connected to the clamping fixing section (121) of the connecting member (12); the connecting member (12) is slidably connected to the connecting cover (15); a threaded portion (124) is provided on the connecting member (12); a rotatable stud (13) is provided on the connecting cover (15); the stud (13) is threadedly connected to the threaded portion (124); the threaded portion (124) is rotated to cause the connecting member (12) to move axially; In the connecting member (12), the vertical clamping and fixing section (121) is fixedly connected to the arc-shaped sliding section (123) via a transition connecting section (122); A slide groove (152) is provided at the top of the connecting cover (15), and the sliding section (123) is slidably installed in the slide groove (152). The two ends of the stud (13) are rotatably supported by a first support seat (14) and a second support seat (14'), and the sliding section (123) at least slides through the first support seat (14).

2. The long-handled probe interventional ultrasonic puncture depth control device according to claim 1, characterized in that: The fixing barb (182) extends from the edge of the fixing groove (181) to the turning portion of the control fixing wing (23), and the fixing barb (182) is hooked on the turning portion of the control fixing wing (23).

3. The long-handled probe interventional ultrasonic puncture depth control device according to claim 1, characterized in that: A fixing protrusion (151) is provided on the inner side of the connecting cover body (15), and a positioning groove (24) is provided at a corresponding position of the puncture needle guide device (2).

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