Rotary-cut needle body and rotary-cut needle equipment

Abstract

According to the rotary-cut needle body and the rotary-cut needle equipment, the developing definition can be improved in the operation that a rotary-cut needle is used for excising tissue, and a doctor is helped to accurately judge the condition of the target tissue. The rotary cutting needle body comprises a hollow inner needle and an outer needle with a cutting groove in the far end, and further comprises an ultrasonic probe, and the ultrasonic probe is located in the inner needle; the ultrasonic probe is in a long strip shape, and an ultrasonic generator at the far end of the ultrasonic probe is located at the position of the cutting groove. The rotary-cut needle equipment comprises a rotary-cut needle handle and a collecting box, and further comprises the rotary-cut needle body. The far end of the rotary cutting needle device is the far end of the outer needle, and the near end of the rotary cutting needle device is the collecting box.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a rotary cutting needle body and a rotary cutting needle device. Background Art

[0002] The rotary cutting needle device is also called a rotary cutting biopsy needle. It has a rotary cutting needle handle and a collection box. The needle body extends from the distal end of the handle. The needle body is a coaxial inner needle and outer needle. The outer needle has an opening near the needle tip, called a cutting groove. The end face of the distal end of the inner needle is a sharp edge. If the end of the inner needle moves distally as close to the end of the outer needle as possible, the inner needle blocks the above-mentioned cutting groove. If the inner needle is withdrawn a certain distance, the cutting groove is open.

[0003] During use, the outer needle and the inner needle are inserted into the tissue together. After entering the tissue, if the groove is in an open state, negative pressure is generated by rotating the cutting needle handle to suck part of the tissue into the groove, and then the inner needle is pushed forward to cut off the part of the tissue from the whole tissue, and then the cut part of the tissue is sucked into the collection box by negative pressure for further analysis.

[0004] The rotary cutting needle device can be used in conjunction with ultrasound, molybdenum target and other imaging methods for the detection and treatment of breast diseases. Compared with other surgical methods, it has the advantages of minimally invasive surgery and large sampling volume.

[0005] Compared with other imaging methods, ultrasound imaging is flexible and easy to operate, and is the most commonly used imaging method in excision surgery. However, during the removal of breast tumors, the cavity left after the tissue is removed will hinder the conduction of ultrasound, which will cause unclear ultrasound imaging. It is difficult for doctors to judge whether the tumor tissue has been completely removed during the operation. Summary of the invention

[0006] In view of this, the present invention proposes a rotary cutting needle body and a rotary cutting needle device, which can improve the imaging clarity during the rotary cutting needle tissue removal surgery and help doctors accurately judge the condition of the target tissue. The present invention proposes the following technical solutions:

[0007] A rotary cutting needle body comprises a hollow inner needle and an outer needle with a groove at the distal end. The rotary cutting needle body also comprises an ultrasonic probe, and: the ultrasonic probe is located inside the inner needle; the ultrasonic probe is in a long strip shape, and the ultrasonic generator at the distal end is located at the position of the groove.

[0008] Optionally, a pulse generator is also provided on the ultrasonic probe.

[0009] A rotary cutting needle device comprises a rotary cutting needle handle and a collection box. The rotary cutting needle device also comprises the rotary cutting needle body described in the present invention. The distal end of the rotary cutting needle device is the distal end of the outer needle, and the proximal end of the rotary cutting needle device is the collection box.

[0010] Optionally, the ultrasonic probe passes through the collecting box and the rotary cutting needle handle.

[0011] Optionally, a plug is further included, which is connected to the proximal end of the collecting box, and the ultrasound probe passes through the plug.

[0012] Optionally, the ultrasonic probe is fixedly connected to the plug; and the plug is fixedly connected to the proximal end of the collecting box.

[0013] Optionally, the inner wall of the proximal end of the collection box is provided with a plurality of protrusions, and locking grooves are formed between adjacent protrusions; the outer surface of the distal end of the plug is provided with a plurality of locking blocks distributed along the circumference of the plug; during the process of inserting the plug into the proximal end of the collection box, the locking block enters from the proximal end of the locking groove and moves toward the distal end of the locking groove; after the locking block moves out of the locking groove from the distal end of the locking groove, the locking block can reach the distal end of the protrusion when there is relative rotation between the collection box and the plug around the axis of the plug.

[0014] Optionally, the multiple protrusions have the same length; the middle portion of the plug is also provided with a plurality of locking ribs distributed along the circumference of the plug, each locking rib being aligned with a locking block in the circumferential direction of the outer surface of the plug; each locking rib has a uniform spacing between it and the locking block with which it is aligned, and the spacing is equal to the length of the multiple protrusions.

[0015] According to the technical solution of the present invention, the ultrasonic probe is integrated into the rotary cutting needle device, and ultrasonic examination can be performed from within the body. Ultrasonic detection at close range can avoid the influence of the cavity position after resection, improve the clarity of the imaging, and assist the surgery to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For purposes of illustration and not limitation, the present invention will now be described in terms of preferred embodiments thereof, with particular reference to the accompanying drawings, in which:

[0017] Figure 1 is a schematic diagram of the appearance of a rotary cutting needle device in an embodiment of the present invention;

[0018] Figure 2A Schematic diagram of the appearance of the rotary cutting needle body in an embodiment of the present invention;

[0019] Figure 2B yes Figure 2A A partial enlarged schematic diagram of the NN section;

[0020] Figure 2C is a schematic diagram of the appearance of an ultrasonic probe in an embodiment of the present invention;

[0021] Figure 3is a schematic diagram of a state where an ultrasonic probe according to an embodiment of the present invention passes through a plug;

[0022] Figure 4 is a schematic diagram of a connection structure between a plug and a collection box according to an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of the steps of a method for using the rotary cutting needle device according to an embodiment of the present invention.

[0024] Among them: 100, rotary cutting needle equipment; 10, rotary cutting needle body; 11, outer needle; 111, cutting groove; 12, rotary cutting needle handle; 13, collection box; 131, proximal end of collection box; 1311, protrusion; 1312, locking groove; 1321, locking block; 1322, locking rib; 132, plug; 14, inner needle; 141, inner needle cutting edge; 2, ultrasonic probe; 21, ultrasonic generator; 22, guide wire. DETAILED DESCRIPTION

[0025] The technical solution of the embodiment of the present invention is described below in conjunction with the accompanying drawings, wherein the "distal end" and "proximal end" are based on the user of the rotary cutting needle device, so the direction of the needle tip is distal, and the opposite direction is proximal. Figure 1 For example, according to the perspective in the picture, the upper left is the far end and the lower right is the near end. Figure 1 Schematic diagram of the appearance of the rotary cutting needle device in the embodiment of the present invention. Figure 1 As shown, the rotary cutting needle device 100 has an outer needle 11 (with a coaxial inner needle inside, which is not visible in the figure), a rotary cutting needle handle 12, a collection box 13, and a plug 132 connected to the proximal end 131 of the collection box. The plug 132 is a rotating body, that is, its cross-section is a circle, and the axis of rotation is a through hole. In an embodiment of the present invention, it is proposed to integrate an ultrasonic device into the rotary cutting needle device, specifically, an ultrasonic probe 2 with a wire 22 is passed through the collection box 13 and the rotary cutting needle handle 12, and is arranged inside the inner needle 14, and an ultrasonic generator 21 is provided at the distal end of the ultrasonic probe 2. The figure shows a state where the ultrasonic generator 21 is exposed from the groove 111 of the outer needle 11, and it can adopt an existing miniature high-frequency ultrasonic probe or a miniature high-frequency ultrasonic transducer.

[0026] Figure 2A is a schematic diagram of the appearance of the rotary cutting needle body in an embodiment of the present invention, Figure 2B yes Figure 2A A partial enlarged schematic diagram of the NN section. Figure 2C Schematic diagram of the appearance of the ultrasonic probe in the embodiment of the present invention. Figure 2A , Figure 2B , Figure 2CAs shown, the rotary cutting needle body 10 comprises an outer needle 11, an inner needle 14 located inside the outer needle 11, an ultrasonic probe 2 located inside the inner needle 14, and an ultrasonic generator 21 located at the distal end of the ultrasonic probe 2. When the inner needle 14 is pulled down so that the inner needle cutting edge 141 is located at the proximal end of the cutting groove 111, the ultrasonic generator 21 is exposed from the cutting groove 111.

[0027] When assembling the rotary cutting needle device 100, the plug 132 and the collection box 13 are first separated. At this time, the ultrasonic probe 2 is passed through the hole in the center of the plug 132. Figure 3 As shown, Figure 3 Schematic diagram of the ultrasonic probe of the embodiment of the present invention passing through the plug. Then the ultrasonic probe 2 is inserted from the proximal end 131 of the collecting box and into the inner needle 14, finally forming Figure 1 state, at which time the plug 132 is fixedly connected to the proximal end 131 of the collecting box, so that the ultrasonic generator 21 remains located at the groove 111.

[0028] The plug 132 and the proximal end 131 of the collection box can be connected by means of a locking groove and a locking block. Figure 4 Schematic diagram of the connection structure between the plug and the collection box according to an embodiment of the present invention. Figure 4 As shown, the proximal end 131 of the collection box (a partially cut-away state is shown in the figure) is provided with a plurality of protrusions 1311 (a complete protrusion 1311 is shown in the figure), and a plurality of locking grooves 1312 are formed between the plurality of protrusions 1311. The outer surface of the distal end of the plug 132 is provided with a plurality of locking blocks 1321, and the middle portion is provided with a plurality of locking ribs 1322. Each locking block 1321 is aligned with each locking rib 1322 in the circumferential direction of the plug 132, as shown in the figure. The spacing between each locking block 1321 and the locking rib 1322 aligned therewith is the same spacing, which is the length of the protrusion 1311, that is, the distance from the distal end of the protrusion 1311 to the proximal end of the protrusion 1311.

[0029] When the plug 132 is connected to the proximal end 131 of the collection box, the locking block 1321 enters from the proximal end of the locking groove 1312 and then comes out from the distal end. At this time, the plug 132 is turned to rotate along its own axis, and the locking block 1321 moves to the distal end of the protrusion 1311. That is to say, the protrusion 1311 is stuck between the locking block 1321 and the locking rib 1322, so that the plug 132 is fixedly connected to the proximal end 131 of the collection box.

[0030] When the rotary cutting needle device 100 in the embodiment of the present invention is used, tissue aspiration can be performed in a conventional manner, and then internal ultrasonic examination can be performed. Figure 5 As shown, Figure 5 It is a schematic diagram of the steps of a method for using the rotary cutting needle device according to an embodiment of the present invention.

[0031] Step 51: Perform rotary cutting. In this step, the ultrasonic probe is not yet installed in the inner needle 14. At this time, according to the conventional operation, with reference to the ultrasonic image, the rotary cutting needle, i.e., the inner needle 14 and the outer needle 11, is inserted into the target position of the human body, the inner needle 14 is pulled back toward the proximal end to open the groove, the tissue is sucked from the groove 111 by negative pressure, the inner needle 14 is pushed forward toward the distal end, the inner needle blade 141 cuts off the tissue entering the groove 111, and the tissue is sucked into the collection box 13 by negative pressure.

[0032] Step 52: Removing tissue. In this step, the plug 132 of the collection box 13 is opened to remove tissue from the collection box 13. The above steps 51 and 52 are conventional operations, which can also be completed by the rotary cutting needle device in the prior art. The next step will utilize the newly added functions of the rotary cutting needle device 100 in this embodiment.

[0033] Step 53: Install the ultrasonic probe. In this step, first connect the ultrasonic probe 2 to the plug 132 to form a Figure 3 In the state shown, the ultrasonic probe 2 is then inserted from the proximal end of the collecting box 13 until the ultrasonic generator 21 reaches the distal end of the inner needle 14, and the inner needle 14 is moved to expose the ultrasonic generator 21 from the cut groove 111. At this time, the inner needle 14 and the outer needle 11 are still inserted at the target position.

[0034] Step 54: Internal ultrasound examination. Because the ultrasound probe 2 is connected to the display system via a wire and the ultrasound generator 21 is located at the target position, a clear ultrasound image of the target position can be obtained to help the doctor determine whether to continue the rotation.

[0035] According to the technical solution of the embodiment of the present invention, an ultrasonic probe is integrated into the rotary cutting needle device, and ultrasonic examination can be performed from the body. Ultrasonic detection at close range can avoid the influence of the position of the cavity after resection, improve the clarity of imaging, and assist the surgery to the greatest extent. Generally, the higher the ultrasound frequency, the higher the imaging clarity, but high-frequency ultrasound has poor penetration and can only be used to detect the skin or tissue close to the skin. By placing the ultrasound probe at the surgical site in the body, a higher frequency ultrasound can be selected, so that a clearer ultrasound image can be obtained.

[0036] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary cutting needle body, comprising a hollow inner needle and an outer needle with a groove at the distal end, characterized in that: The rotary cutting needle body also includes an ultrasonic probe, and: The ultrasonic probe is located inside the inner needle; The ultrasonic probe is in the shape of a long strip, and the ultrasonic generator at the far end is located at the position of the cutting groove.

2. The rotary cutting needle body according to claim 1, characterized in that: The ultrasonic probe is also provided with a pulse generator.

3. A rotary cutting needle device, comprising a rotary cutting needle handle and a collection box, characterized in that: The cutting needle device further comprises the rotary cutting needle body according to claim 1 or 2; The distal end of the rotary cutting needle device is the distal end of the outer needle, and the proximal end of the rotary cutting needle device is the collection box.

4. The rotary cutting needle device according to claim 3, characterized in that: The ultrasonic probe passes through the collecting box and the rotary cutting needle handle.

5. The rotary cutting needle device according to claim 4, characterized in that: The invention also comprises a plug which is connected to the proximal end of the collecting box and through which the ultrasonic probe passes.

6. The rotary cutting needle device according to claim 5, characterized in that: The ultrasonic probe is fixedly connected to the plug; The plug is fixedly connected to the proximal end of the collecting box.

7. The rotary cutting needle device according to claim 6, characterized in that: The inner wall of the proximal end of the collecting box is provided with a plurality of protrusions, and locking grooves are formed between adjacent protrusions; The outer surface of the distal end of the plug is provided with a plurality of locking blocks distributed along the circumference of the plug; During the process of inserting the plug into the proximal end of the collecting box, the locking block enters from the proximal end of the locking groove and moves toward the distal end of the locking groove; After the locking block moves out of the locking groove from the distal end of the locking groove, the locking block can reach the distal end of the protrusion when there is a relative rotation between the collecting box and the plug around the plug axis.

8. The rotary cutting needle device according to claim 7, characterized in that: The plurality of protrusions have the same length; The middle part of the plug is also provided with a plurality of locking ribs distributed along the circumference of the plug, each locking rib is aligned with a locking block on the circumference of the outer surface of the plug; each locking rib has a uniform spacing with the locking block it is aligned with, which is equal to the length of the plurality of protrusions.

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