CN107280736A - Long handle probe Interventional Ultrasound paracentesis depth control device - Google Patents

Abstract

The invention provides a long-handle probe interventional ultrasonic puncture depth control device, which relates to the field of interventional ultrasonic equipment in medical equipment, which includes a puncture needle guide device and a depth control device; the puncture needle guide device is provided with a device for guiding the puncture needle The puncture guide cylinder is provided with a probe fixing wing for connecting a long-handled ultrasonic probe under 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 clamping device for connecting with the puncture needle guide device. connection device. Through the provided puncture needle guide device and depth control device, the position of the puncture needle in the puncture guide cylinder can be conveniently limited, so that during the operation, the puncture needle can be locked according to the treatment needs, and the doctor's hands can be released for other diagnosis and treatment operate. The depth control device can be easily installed and removed during the operation without affecting the ultrasonic detection and puncture operation.

Description

Long handle probe interventional ultrasonic puncture depth control device

technical field

The invention relates to the field of interventional ultrasonic instruments in medical instruments, in particular to a long-handle probe interventional ultrasonic puncture depth control device.

Background technique

Interventional ultrasound (interventional ultrasound) is a technology developed on the basis of ultrasound imaging to further meet the needs of clinical diagnosis and treatment. It is the extension and development of the clinical application of ultrasound. Its main features are: Under dynamic monitoring or guidance, the puncture needle or catheter can be accurately placed into the lesion, cyst cavity or pipeline structure by direct percutaneous puncture, and various puncture biopsy, angiography, drainage, drug injection and other operations can be completed. Compared with surgical operations, this technology has the advantages of less trauma, faster postoperative recovery, and accurate diagnosis and treatment effects. It is widely used in clinics, such as: ultrasound-guided diagnosis of space-occupying lesions in the vagina, uterus, ovary, intestinal tract, and prostate. Puncture biopsy; ultrasound-guided puncture sclerotherapy; ultrasound-guided microwave and radiofrequency ablation of tumors. In the process of puncture, in order to avoid 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.

Especially in the following situations, the accurate grasp of puncture depth directly affects the success rate of puncture diagnosis and treatment and the degree of damage to surrounding tissues:

1. During the puncture diagnosis and treatment of cystic masses in the pelvic cavity or from pelvic organs, after the cystic fluid is drawn out, the cystic wall collapses, and changes in the depth of the puncture needle may cause the puncture needle to break the cystic wall or withdraw from the cystic cavity, allowing the puncture needle to reach Locations other than the cystic cavity may lead to drug injection treatment failure or even serious consequences. For example, drug injection into the interstitial space can cause inflammatory reactions and even tissue necrosis.

2. During ultrasound-guided puncture ablation of tumors, contrast-enhanced ultrasound technology can be used to determine the areas where the tumor has not been completely ablated. At this time, it is necessary to perform further ablation of these residual lesions accurately. The fixed puncture depth can help to completely ablate the residual lesions and Reduce damage to surrounding normal tissues.

3. During biopsy of small lesions, changes in the depth of the puncture needle cause the puncture needle to deviate from the lesion, resulting in failure of biopsy.

4. The internal blood supply is rich and special parts, such as: throat, thyroid and parathyroid glands, liver hilar and other lesions during biopsy and ablation treatment, if the puncture depth is too deep, it may cause the surrounding trachea, esophagus, recurrent laryngeal nerve, Important structures such as the portal vein are damaged, and the shallow puncture depth may lead to incomplete ablation treatment. However, the accurate grasp of the puncture depth has always been a technical problem that has plagued interventional sonographers. Due to the inability to grasp the puncture depth, some interventional ultrasound risk assessments are too high to be implemented. In the process of 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 withdrawing from the puncture target due to misoperation, causing damage to the surrounding vital organs or affecting the curative effect. However, in the actual operation process, it is difficult for interventional ultrasound doctors to keep the depth of the puncture needle constant, and the use of one hand to fix the puncture needle will inevitably affect other complicated diagnostic and treatment operations that require both hands. Therefore, precise control of the puncture depth is very important for improving the success rate of interventional ultrasound diagnosis and treatment and effectively reducing complications. At present, among domestic puncture equipment used for interventional ultrasound, no manufacturer has provided equipment that can be used to fix, control and fine-tune the depth of the puncture needle.

Chinese patent document CN 103340655 A describes a puncture needle detection device based on ultrasonic detection, which includes 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. Two angle sensors, 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, the use of this structure still requires manual adjustment by the doctor, which still has high operational difficulty.

Contents of the invention

The technical problem to be solved by the present invention is to provide a long-handle probe interventional ultrasonic puncture depth control device, which can provide guidance for the puncture needle while controlling the depth of the puncture needle, freeing the doctor's hand for other operations. In a preferred solution, while controlling the puncture needle, the depth of the puncture needle can also be precisely fine-tuned according to the operation situation.

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

The puncture needle guiding 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 under the puncture guide cylinder;

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

In a preferred solution, the tail of the puncture guide cylinder is provided with control fixed wings that open to both sides;

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 cylinder, the two sides of the connecting cover body are hinged with the fixed arm, and the end of the fixed arm is provided with a fixed end. The terminal is provided with a fixed groove for accommodating the fixed wing, and a fixed barb is arranged on the edge of the fixed groove, and the fixed terminal is connected with the fixed wing.

In a preferred solution, the fixing barb extends from the edge of the fixing slot to the turning portion of the fixing wing, and the fixing barb hooks on the turning portion of the fixing wing.

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

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.

In a preferred solution, in the clamping device, the fixed piece is fixedly connected to the clamping and fixed section of the connecting piece, the connecting piece is connected to the connecting cover, the fixed piece is connected to the movable piece through a pin arranged in the middle, and the fixed piece The two ends of the movable piece and the movable piece are provided with mutually adsorbed magnets.

In a preferred solution, a friction layer is provided at the position where the clamping device is in contact with the puncture needle.

In a preferred solution, there are at least two groups of the fixed piece and the movable piece, wherein the friction layer of one group is rubber or silica gel, and the puncture needle cannot move axially in the clamped state, and the friction layer of the other group is a felt pad , the puncture needle can move axially after overcoming the resistance in the clamped state.

In a preferred solution, the clamping device is fixedly connected to the clamping section of the connecting piece, the connecting piece is slidably connected to the connecting cover, the connecting piece is provided with a threaded part, and the connecting cover is provided with a rotatable stud. The column is threadedly connected with the threaded part, and the threaded part is rotated to move the connecting piece axially.

In a preferred solution, in the connecting piece, the vertical clamping and fixing section is fixedly connected to the arc-shaped sliding section through a transition connecting section;

There is a sliding groove on the top of the connecting cover, and the sliding section is slidably installed in the sliding groove, and 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 support seat.

The present invention provides a device for controlling the depth of ultrasonic puncture with a long-handle probe. Through the provided puncture needle guide device and depth control device, the position of the puncture needle in the puncture guide can be conveniently limited, so that during the operation, according to the treatment If necessary, lock the puncture needle and release the doctor's hands for other diagnostic 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 a preferred solution, the provided stud can precisely fine-tune the depth of the puncture needle during the puncture process, for example, during the aspiration of cyst fluid, the position of the needle tip of the puncture needle can be adjusted accordingly as the volume of the vesicle changes. The adjustment accuracy error can be lower than 0.1mm. Through the provided anti-backlash structure, the virtual position in the adjustment process can be reduced, and the adjustment accuracy can be further improved.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Fig. 1 is the whole structural schematic diagram of parts decomposition of the present invention.

Fig. 2 is a perspective view of the puncture needle guide device of the present invention.

Fig. 3 is a structural schematic diagram of the depth control device in the present invention.

Fig. 4 is a view along the direction A of Fig. 3 .

Fig. 5 is a perspective view of the connecting piece in the present invention.

FIG. 6 is a schematic cross-sectional view along B-B of FIG. 3 .

FIG. 7 is a schematic cross-sectional view of C-C in FIG. 3 .

FIG. 8 is a schematic cross-sectional view along D-D of FIG. 3 .

In the figure: depth control device 1, first clamping device 11, fixed piece 111, pin shaft 112, magnet 113, friction layer 114, movable piece 115, second clamping device 11', connecting piece 12, clamping fixed section 121, transitional connection section 122, sliding section 123, threaded part 124, stud 13, first support seat 14, second support seat 14', connection cover body 15, fixed protrusion 151, chute 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 cylinder 22, control fixed wing 23, positioning groove 24, long handle ultrasonic probe 3 , puncture needle 4.

detailed description

As shown in Figure 1, a long-handle probe intervening ultrasonic puncture depth control device, it includes a puncture needle guide device 2 and a depth control device 1;

As shown in Figure 2, the puncture needle guide 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 handle ultrasonic probe 3 is provided below the puncture guide cylinder 22;

As shown in FIGS. 3 to 8 , 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 with the puncture needle guide device 2 . With this structure, during the ultrasonic interventional operation, the position of the puncture needle 4 can be fixed by the clamping device, so that one hand of the doctor can be freed for other operations.

The preferred solution is as shown in Figures 2 and 4, the tail of the puncture guide cylinder 22 is provided with control fixed wings 23 that open to both sides; the fixed wings 23 are in a horizontal state.

The connection device of the depth control device 1 is provided with an inverted "U"-shaped connecting cover body 15, the connecting cover body 15 is clamped with the puncture guide cylinder 22, and the two sides of the connecting cover body 15 are hinged with the fixed arm hinge seat 16 and the fixed arm 17, The fixed arm 17 is substantially horizontal, the end of the fixed arm 17 is provided with a fixed terminal 18, the fixed terminal 18 is provided with a fixed groove 181 for accommodating the fixed wing 23, and the edge of the fixed groove 181 is provided with a fixed barb 182, The fixed end 18 is sleeved on the fixed wing 23 .

A preferred solution is shown in FIG. 4 , the fixing barb 182 extends from the edge of the fixing slot 181 to the turning portion of the fixing wing 23 , and the fixing barb 182 hooks on the turning portion of the fixing wing 23 . With this structure, the connection cover body 15 is fixedly connected with the fixed wing 23, thereby connecting the connection cover body 15 and the puncture needle guide device as a whole, and the installation and disassembly are very convenient.

As shown in Figures 2, 3 and 6, the preferred solution is to provide a fixing protrusion 151 on the inner side of the connecting cover 15, and a positioning groove 24 at a corresponding position of the puncture needle guide 2. This structure ensures that the installation is more firm.

In an optional 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 4 . The structure provided as a clip facilitates the installation of the depth control device, and the depth control device 1 can be conveniently installed even during the puncturing operation.

The preferred solution is as shown in Figures 3, 5, and 7. In the clamping device described above, the fixing piece 111 is fixedly connected to the clamping and fixing section 121 of the connecting piece 12, the connecting piece 12 is connected to the connecting cover 15, and the fixing piece 111 passes through The pin shaft 112 arranged in the middle is connected with the movable piece 115, and the two ends of the fixed piece 111 and the movable piece 115 are provided with magnets 113 which attract each other. With this structure, the operation is more convenient. Preferably, as shown in FIG. 7 , the upper part of the movable piece 115 is provided with a bent structure, so that the position for clamping the puncture needle 4 below can have a larger opening, and the operation is more convenient. The two ends of the fixed piece 111 and the movable piece 115 are provided with magnets 113 that are attracted to each other, so that the clamping device can be fixed in two states of opening and closing, and the operation is more convenient. The magnet 113 that attracts each other includes two magnet blocks with different polarities, or a magnet block and a ferromagnet are mutually adsorbed, at least a larger magnetic force is used at the bottom of the fixed piece 111 and the movable piece 115 to ensure that the clamping force is sufficient .

The preferred solution is as shown in FIG. 7 , where a friction layer is provided at the position where the clamping device is in contact with the puncture needle 4 . In a preferred solution, the fixed piece 111 and the movable piece 115 are at least two groups, wherein the friction layer of one group is rubber or silica gel, and the puncture needle 4 cannot move axially in the clamped state, and the friction layer of the other group is rubber or silica gel. It is a felt pad, and the puncture needle 4 can move axially after overcoming the resistance in the clamped state. This structure is adopted to cope with different operation modes. When the puncture needle 4 needs to be manually adjusted, the clamping device using the felt pad as the friction layer is closed. Since the friction of the felt pad is small, it is enough to ensure that the puncture needle is under the action of gravity, for example. It is enough that it does not move down, and when it needs to be adjusted, it can be adjusted by hand. When the precise adjustment method described below is required, the clamping device using rubber or silica gel as the friction layer is closed, so that when the connecting part 12 is accurately displaced, the clamping device can drive the puncture needle for precise displacement.

The preferred solution is as shown in Figures 3 and 5, the clamping device is fixedly connected to the clamping section 121 of the connecting piece 12, the connecting piece 12 is slidably connected to the connecting cover body 15, the connecting piece 12 is provided with a threaded part 124, and the connecting cover A rotatable stud 13 is provided on the body 15, and the stud 13 is threadedly connected with the threaded part 124, and the rotating threaded part 124 makes the connecting piece 12 move axially. With this structure, turning the stud can drive the connecting piece 12 to slide back and forth, thereby accurately adjusting the depth of the puncture needle.

The preferred solution is shown in Figure 5. In the connector 12, the vertical clamping and fixing section 121 is fixedly connected with the substantially horizontal arc-shaped sliding section 123 through the transition connecting section 122, and the threaded part 124 is arranged on the sliding section 123. the top of;

As shown in Fig. 3, a chute 152 is provided on the top of the connecting cover body 15, and the sliding section 123 is slidably installed in the chute 152, and the two ends of the stud 13 can pass through the first support seat 14 and the second support seat 14'. For rotational support, the sliding section 123 at least slides through the first support seat 14 . With this structure, the volume of the whole device can be reduced to avoid interference and facilitate operation.

During use, as shown in Figure 1, the puncture needle guide 2 is installed, the depth control device 1 is connected with the puncture needle guide 2 through the fixed arm 17 and the connecting cover 15, the puncture needle 4 is inserted into the puncture guide cylinder 22, and the second A clamping device 11 is clamped with the puncture needle 4, the friction layer 114 of the first clamping device 11 is made of a felt pad, 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. After the puncture position, the puncture depth of the puncture needle 4 is limited, and the doctor performs other operations with the free hand, such as taking out the needle core, connecting a suction device or a syringe, and the like. According to the operation process, when the position of the puncture needle 4 needs to be moved precisely, the second clamping device 11' is closed, the stud 13 is rotated, the stud 13 is screwed with the threaded part 124, and the sliding section 123 of the connecting piece 12 is driven to slide along the sliding section 123. The groove 152 slides, thereby precisely adjusting the puncture depth of the puncture needle 4 .

The above-mentioned embodiments are only preferred technical solutions of the present invention, and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solution described in the claims, including the equivalent of technical features in the technical solutions described in the claims. The alternative is the scope of protection. That is, equivalent replacement and improvement within this range are also within the protection scope of the present invention.

Claims (10)

1. The Interventional Ultrasound paracentesis depth control device 1. a kind of long handle is popped one's head in, it is characterized in that：It includes puncture needle guider（2）With Depth control apparatus（1）；

   Described puncture needle guider（2）Provided with for biopsy needle guide（4）Puncture guide（22）, puncture guide（22）Under Side, which is provided with, to be used to connect long handle ultrasonic probe（3）Probe fixed-wing（21）；

   Described depth control apparatus（1）Being provided with is used to fix puncture needle（4）The clamping device of position, is additionally provided with for wearing Pricker guider（2）The attachment means of connection.
2. 2. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to claim 1, it is characterized in that：Puncturing Guide（22）Afterbody be provided with the control fixed-wing that is opened to both sides（23）；

   Depth control apparatus（1）Attachment means be provided with inverted " u "-shaped connection cover body（15）, connect cover body（15）With puncturing guide （22）Clamping, connects cover body（15）Both sides and fixed arm（17）It is hinged, fixed arm（17）Termination be provided with fixed termination（18）Gu, Fixed end head（18）Provided with for accommodating fixed-wing（23）Fixing groove（181）, in fixing groove（181）Edge be provided with fixed barb （182）, fixed termination（18）With fixed-wing（23）Connection.
3. 3. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to claim 2, it is characterized in that：Fix Hook（182）From fixing groove（181）Edge extend to fixed-wing（23）Turning point, fixed barb（182）Hook in fixed-wing （23）Turning point.
4. 4. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to claim 2, it is characterized in that：In connection Cover body（15）Inner side be provided with fixed lobe（151）, in puncture needle guider（2）Relevant position is provided with locating slot（24）.
5. 5. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to claim 1, it is characterized in that：Described Clamping device is the clip provided with spring, clip and puncture needle（4）The position of contact is provided with frictional layer.
6. 6. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to any one of claim 1 ~ 4, its feature It is：In described clamping device, stator（111）With connector（12）Grip section（121）It is fixedly connected, connector （12）With being connected cover body（15）Connection, stator（111）Pass through the bearing pin located at middle part（112）With activity template（115）Connection, Gu Stator（111）And activity template（115）Two ends are provided with the magnet adsorbed mutually（113）.
7. 7. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to any one of claim 6, it is characterized in that： In clamping device and puncture needle（4）The position of contact is provided with frictional layer.
8. 8. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to claim 7, it is characterized in that：Described Stator（111）And activity template（115）At least two groups, the frictional layer of one of which is rubber or silica gel, under clamp position Puncture needle（4）It can not move axially, another group of frictional layer is felt pan, the puncture needle under clamp position（4）Overcome energy after resistance Enough axial movements.
9. 9. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to claim 1 ~ 5,7 ~ 8 any one, its It is characterized in：Clamping device and connector（12）Grip section（121）It is fixedly connected, connector（12）With being connected cover body（15） It is slidably connected, in connector（12）It is provided with threaded portion（124）, connect cover body（15）It is provided with rotatable stud（13）, spiral shell Post（13）With threaded portion（124）Threaded connection, rotates threaded portion（124）Make connector（12）Axial movement.
10. 10. a kind of long handle probe Interventional Ultrasound paracentesis depth control device according to claim 9, it is characterized in that：It is described Connector（12）In, vertical grips section（121）Pass through transition linkage section（122）With the glissile segment of arc（123）Gu Fixed connection；

    In connection cover body（15）Top be provided with chute（152）, glissile segment（123）It is slidably mounted on chute（152）It is interior, in stud （13）Two ends pass through the first fulcrum bearing（14）With the second fulcrum bearing（14'）Rotatable supporting, glissile segment（123）At least slide Ground passes through the first fulcrum bearing（14）.