Laparoscope cold knife with operation area washing and negative pressure suction device

Abstract

The utility model discloses a laparoscope cold knife with an operation area washing and negative pressure suction device, which comprises a grip, the left side of the grip is fixedly connected with a sleeve, a cold knife connecting rod is arranged in the sleeve, and the right end of the cold knife connecting rod is fixedly connected with a cold knife propelling handle. A notch in sliding connection with a cold knife propelling handle is formed in the front face of the grip. The disposable cold knife is compact and reasonable in structure and convenient to operate, has the functions of a cold knife and an aspirator, controls the flushing and suction functions of the aspirator through the button, controls the blade to stretch out or not through the cold knife pushing handle, and can completely retract into the sleeve, so that the possibility of mistaken damage in the placing and taking-out process is avoided. The multifunctional scalpel can simultaneously perform cutting, surgical area flushing and negative pressure suction functions, can perform clinical operation only by adopting a single function, is reliable in switching and high in stability, can achieve the effect that one scalpel has multiple purposes, can effectively reduce the burden of operators, and improves the surgical stability.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, and more specifically to a laparoscope cold knife with an operation area flushing and negative pressure suction device. Background Art

[0002] All cutting instruments under laparoscopy today are energy devices, such as monopolar electroscalpels, ultrasonic scalpels, bipolar electroscalpels, etc. The heat generated by energy devices helps to close blood vessels during the cutting process and helps coagulation. However, if energy devices are used in some cutting processes involving thinner tubular tissues, the heat damage can lead to subsequent stenosis of the lumen. Therefore, some delicate operations in clinical practice require cold knife cutting, such as ureterolithotomy. However, the long-handled cold knife devices used in laparoscopic surgery are all homemade, that is, the blade is clamped with a needle holder and inserted into the abdominal cavity through a puncture card for cutting.

[0003] This homemade device has extremely poor safety because there is no blade protection measure, and there is a possibility of accidentally injuring other organs when it is placed in the abdominal cavity. The blade is also very likely to shift during the cutting process, and the expected cutting effect cannot be achieved. There is even a risk of the blade falling off in the abdominal cavity. Due to the small structure of the blade and the peristalsis of the intestines in the abdominal cavity, it is difficult to find the blade in the abdominal cavity after it falls off. If any blade is left behind, it will lead to huge postoperative risks.

[0004] In addition, laparoscopic surgery is a minimally invasive surgery, and the simple cold knife itself has some shortcomings. When performing the cutting operation, the cutting site is prone to bleeding due to the lack of thermal hemostasis effect. In addition, the outflow of accumulated fluid (urine) after the lumen is opened causes unclear vision during the operation. Therefore, it is necessary to insert or replace the suction device to flush the surgical area and aspirate the tissue fluid to ensure a clear field of vision and safe operation during the operation.

[0005] Therefore, during this type of surgery, the surgeon often needs to frequently change instruments or add assistants to assist in the operation. Frequent changes of tools lead to unsmooth surgical operations, waste the surgeon's time and energy, and easily lead to enlarged incisions. When multiple medical staff perform the operation, an extra channel needs to be inserted, which means adding more surgical incisions. In addition, misunderstandings between surgeons may affect the effect and quality of the operation. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a laparoscopic cold knife with an operation area flushing and negative pressure suction device, which can perform cutting, operation area flushing and negative pressure suction functions at the same time, and can achieve the effect of one knife for multiple uses, with reliable switching and high stability.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A laparoscopic cold knife with an operation area flushing and negative pressure suction device comprises a handle, a sleeve is fixedly connected to the left side of the handle, a cold knife connecting rod is arranged in the sleeve, and a cold knife pushing handle is fixedly connected to the right end of the cold knife connecting rod. A notch is provided on the front side of the handle for sliding connection with the cold knife pushing handle, a blade is fixedly connected to the left end of the cold knife connecting rod, a water inlet strip and a water outlet strip are inserted into the bottom of the handle, and a flushing button and a negative pressure suction button are respectively installed on the water inlet strip and the water outlet strip.

[0009] Compared with the prior art, the advantages of the present invention are:

[0010] This solution has a compact and reasonable structure, is easy to operate, and has the functions of a cold knife and an aspirator. The flushing and aspiration functions of the aspirator are controlled by buttons, and the blade is controlled to be extended by the cold knife push handle. The blade can be completely retracted into the cannula to avoid the possibility of accidental damage during insertion and removal. The utility model can simultaneously perform cutting, surgical area flushing, and negative pressure aspiration functions, or only use a single function for clinical operations, and the switching is reliable and stable, which can achieve the effect of one knife for multiple uses, effectively reduce the burden on operators, and improve surgical stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is one of the three-dimensional diagrams of the utility model;

[0012] Figure 2 This is the second stereogram of the utility model;

[0013] Figure 3 It is a cross-sectional view of the sleeve in the utility model.

[0014] Description of the numbers in the figure:

[0015] 1. Handle; 2. Casing; 3. Cold knife connecting rod; 4. Cold knife pushing handle; 5. Blade; 6. Water inlet strip; 7. Water outlet strip; 8. Flush button; 9. Negative pressure suction button. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] In the utility model: a laparoscopic cold knife with an operation area flushing and negative pressure suction device, comprising a grip 1, a sleeve 2 is fixedly connected to the left side of the grip 1, a cold knife connecting rod 3 is arranged in the sleeve 2, and a cold knife pushing handle 4 is fixedly connected to the right end of the cold knife connecting rod 3. A notch is provided on the front of the grip 1 to be slidably connected to the cold knife pushing handle 4, a blade 5 is fixedly connected to the left end of the cold knife connecting rod 3, a water inlet strip 6 and a water outlet strip 7 are inserted into the bottom of the grip 1, and a flushing button 8 and a negative pressure suction button 9 are respectively installed on the water inlet strip 6 and the water outlet strip 7.

[0018] Working principle:

[0019] First, connect the water outlet strip 7 to the negative pressure suction device on the wall of the operating room, turn on the negative pressure suction device on the wall of the operating room, adjust its negative pressure, connect the water inlet strip 6 to physiological saline or distilled water through the infusion set, and press the flush button 8 to realize the flushing function of the cannula 2. When the flush button 8 is in a natural state, the suction sheath connecting tube in the flush button 8 is not connected to the cannula 2 and the water inlet strip 6, and no flushing liquid flows out of the cannula 2 at this time;

[0020] When the flush button 8 is pressed down, the inner sheath connecting tube of the aspirator in the flush button 8 is connected to the cannula 2 and the water inlet strip 6, and then physiological saline or distilled water can enter the cannula 2 to achieve the function of flushing the surgical area;

[0021] By pressing the negative pressure suction button 9, the negative pressure suction function of the sleeve 2 can be realized. When the negative pressure suction button 9 is in a natural state, the inner sheath connecting tube of the suction device in the negative pressure suction button 9 is not connected with the sleeve 2 and the water outlet strip 7. At this time, there is no negative pressure in the sleeve 2, and its negative pressure suction function is in a closed state; when the negative pressure suction button 9 is pressed down, the inner sheath connecting tube of the suction device in the button is connected with the sleeve 2 and the water outlet strip 7. At this time, there is negative pressure in the sleeve 2, and its negative pressure suction function is in an open state.

[0022] A blade 5 and a cold knife connecting rod 3 are provided inside the sleeve 2. The blade 5 is a double-edged blade that can achieve the functions of stabbing and multi-directional cutting. The blade 5 is located at the front end of the cold knife connecting rod 3, and the two are fixedly connected. A cold knife pushing handle 4 is provided outside the sleeve 2, and the cold knife connecting rod 3 and the cold knife pushing handle 4 are fixedly connected.

[0023] The cold knife connecting rod 3 and the blade 5 are located in the sleeve 2, and can slide forward and backward in the sleeve 2 along the longitudinal axis direction of the sleeve 2 under the control of the cold knife pushing handle 4, so as to realize the extension or retraction function of the blade 5. The forward and backward movement range of the blade 5 in the sleeve 2 is that the tip of the blade can be pushed out 1 cm from the front edge of the sleeve 2 until the tip of the blade is completely retracted into the sleeve 2. The telescopic cutting, surgical area flushing and suction functions of the cold knife can be used independently, and the negative pressure suction button 9 or the flushing button 8 can be pressed down while the cold knife is extended for cutting to flush the surgical area and suction the liquid in the surgical area, so as to ensure a clear surgical field, ensure the safety of surgical operation, reduce patient injury, and reduce the time and labor cost of surgery.

[0024] The above are only preferred specific implementations of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A laparoscopic cold knife with an operation area flushing and negative pressure suction device, comprising a handle (1), characterized in that: The left side of the grip (1) is fixedly connected to a sleeve (2), a cold knife connecting rod (3) is arranged in the sleeve (2), and the right end of the cold knife connecting rod (3) is fixedly connected to a cold knife pushing handle (4); The front of the grip (1) is provided with a notch for sliding connection with the cold knife pushing handle (4), and the left end of the cold knife connecting rod (3) is fixedly connected with a blade (5); A water inlet strip (6) and a water outlet strip (7) are inserted through the bottom of the handle (1), and a flushing button (8) and a negative pressure suction button (9) are respectively installed on the water inlet strip (6) and the water outlet strip (7).

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