Skull cutting water jet scalpel

Abstract

The utility model provides a skull cutting water jet scalpel which comprises a shell, a pressure pipe and a backflow hose are arranged in the shell, the input end of the pressure pipe is connected with a high-pressure pipe, the end, away from the high-pressure pipe, of the shell is connected with a first corrugated pipe, and the end, away from the shell, of the first corrugated pipe is connected with a connector assembly. The connector assembly comprises a movable connector, a movable spraying pipe and a second corrugated pipe, the movable connector is connected with the end, away from the high-pressure pipe, of the pressure pipe through the second corrugated pipe, and the movable connector is connected with the shell through the first corrugated pipe; the movable spray pipe is connected with the movable connector, and a fixing assembly used for fixing the movable connector is installed on the shell. According to the water jet scalpel, the problem that in the prior art, when a water jet scalpel is used, the spraying angle of liquid jet flow is fixed, and tissue at different positions cannot be cut or cleaned conveniently can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting devices, and particularly relates to a skull cutting water knife. Background Art

[0002] Medical water knives form high-speed liquid jets to impact the surgical site for tissue resection; they have the advantages of less trauma, less bleeding, and high tissue selectivity. Medical water knives are a new type of surgical separation technology with good tissue selectivity. They use high-speed and extremely fine water jets formed by spraying physiological saline to impact and cut biological tissues to achieve tissue separation; in neurosurgery, medical water knives can also be used to cut the skull or periosteum.

[0003] For doctors and patients, the shorter the operation time, the smaller the potential risks of the operation, and the safer the operation. To improve the efficiency of the water knife liquid jet, the utility model with the publication number CN219126571U discloses a shower-type medical water knife surgical instrument (hereinafter referred to as the prior art 1), which includes a nozzle head, a pressure pipe, and a return pipe. The nozzle head is connected to one end of the pressure pipe. An accommodation space is provided inside the nozzle head, and the accommodation space is communicated with the pressure pipe; a plurality of spray holes are provided at the first end of the nozzle head, and the plurality of spray holes are communicated with the accommodation space. The return pipe is arranged towards the direction of the spray holes, and a working space for cutting human tissues is defined between the nozzle head and the return pipe.

[0004] Although the medical water knife in the prior art 1 improves the cutting or ablation efficiency, the spray angle of the liquid jet in the water knife of the prior art 1 remains fixed during use, which is not convenient for resection or cleaning of tissues at different positions. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a skull cutting water knife, which can solve the problem that the spray angle of the liquid jet in the water knife of the prior art remains fixed during use, making it inconvenient to resect or clean tissues at different positions during actual use.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A skull cutting water knife includes a housing. A pressure pipe and a return hose are arranged inside the housing. The input end of the pressure pipe is connected to a high-pressure pipe. One end of the housing away from the high-pressure pipe is connected to a first corrugated pipe, and one end of the first corrugated pipe away from the housing is connected to a joint assembly;

[0008] The joint assembly includes a movable joint, a movable nozzle, and a second corrugated pipe. The movable joint is connected to one end of the pressure pipe away from the high-pressure pipe through the second corrugated pipe, and the movable joint is connected to the housing through the first corrugated pipe. The movable nozzle is connected to the movable joint, and a fixing assembly for fixing the movable joint is installed on the housing.

[0009] The liquid outlet end of the movable nozzle is arranged towards the inner wall of the return hose, and one end of the return pipe away from the movable nozzle is used to be connected to a negative pressure device.

[0010] Preferably, the fixing assembly includes a first fixing plate, a second fixing plate, and a fixing bolt. The first fixing plate is connected to the housing, the second fixing pipe is connected to the movable joint, and the first fixing plate is hinged to the second fixing plate. The fixing bolt is threadedly connected to the first fixing plate, and a plurality of limiting holes are arranged on the second fixing plate. After the fixing bolt cooperates with the limiting holes, the second fixing plate can be fixed.

[0011] Preferably, the limiting holes are arranged at equal intervals along the rotation direction of the second fixing plate.

[0012] Preferably, the head of the movable nozzle is semi-circular. A semi-circular groove is formed at one end of the movable joint connected to the movable nozzle. The semi-circular movable nozzle is embedded in the semi-circular groove and fixedly connected to the semi-circular groove.

[0013] Preferably, a first thread groove for connecting to a protective shell is arranged on the movable joint.

[0014] Preferably, a fixing block is installed in the housing, and a first limiting hole and a second limiting hole for limiting the return hose and the pressure pipe are arranged on the fixing block.

[0015] Preferably, a nozzle head is detachably installed at the liquid outlet end of the movable nozzle, and spray holes for water flow to pass through are arranged on the nozzle head.

[0016] Preferably, a second thread groove is arranged on the movable nozzle, and the nozzle head is threadedly connected to the movable nozzle through the second thread groove.

[0017] Preferably, anti-slip patterns are arranged on the housing.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] In the present utility model, the high-pressure pipe is used to input high-pressure liquid into the pressure pipe. The high-pressure liquid entering the pressure pipe enters the movable nozzle through the second corrugated pipe and then sprays out from the liquid outlet end of the movable nozzle at a high speed. The high-speed liquid sprayed out from the movable nozzle can clean and cut biological tissues after contacting the biological tissues to achieve tissue separation. The liquid outlet end of the movable nozzle is arranged towards the return hose, facilitating the negative pressure device connected to the return hose to recover tissues and waste liquid into the return pipe.

[0020] When it is necessary to adjust the angle between the axis of the movable nozzle and the axis of the pressure pipe according to actual needs so that the high-speed liquid sprayed out from the movable nozzle can better cut tissues at different positions; since the movable joint is flexibly connected to the housing through the first corrugated pipe and the movable nozzle is flexibly connected to the pressure pipe through the second corrugated pipe, after adjusting the position of the movable joint, the angle between the axis of the movable joint and the axis of the housing and the angle between the axis of the movable nozzle and the axis of the pressure pipe can be adjusted simultaneously, thereby further improving the efficiency of water jet cleaning and cutting. The fixing component is used to fix the movable joint adjusted to a predetermined position. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can be obtained based on these drawings.

[0022] Figure 1 Is a perspective view of the present utility model.

[0023] Figure 2 Is a structural schematic diagram of the present utility model.

[0024] Figure 3 For the present utility model Figure 1 Is a partial enlarged view of part A in the present utility model.

[0025] Figure 4 For the present utility model Figure 2 Is a partial enlarged view of part B in the present utility model.

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 101 - housing, 102 - pressure pipe, 103 - return hose, 104 - first bellows, 105 - joint assembly, 106 - movable joint, 107 - movable nozzle, 108 - second bellows, 109 - fixing assembly, 110 - first fixing plate, 111 - second fixing plate, 112 - fixing bolt, 113 - fixing block, 114 - first limiting hole, 115 - second limiting hole. Detailed implementation manners

[0028] In the following, only some exemplary embodiments are simply described. As can be recognized by those skilled in the art, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are regarded as being exemplary in nature rather than restrictive.

[0029] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0032] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present utility model. To simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0035] Refer to Figures 1 - 3 , this embodiment discloses a water knife for cutting the cranial membrane or the skull, specifically a cranial cutting water knife, which includes a housing 101. A pressure pipe 102 and a return hose 103 are arranged in the housing 101. The input end of the pressure pipe 102 is connected to a high-pressure pipe. One end of the housing 101 away from the high-pressure pipe is connected to a first bellows 104. One end of the first bellows 104 away from the housing 101 is connected to a joint assembly 105;

[0036] The joint assembly 105 includes a movable joint 106, a movable nozzle 107 and a second bellows 108. The movable joint 106 is connected to the end of the pressure pipe 102 away from the high-pressure pipe through the second bellows 108, and the movable joint 106 is connected to the housing 101 through the first bellows 104; the movable nozzle 107 is connected to the movable joint 106, and a fixing assembly 109 for fixing the movable joint 106 is installed on the housing 101;

[0037] The liquid outlet end of the movable nozzle 107 is arranged towards the inner wall of the return hose 103, and the end of the return pipe away from the movable nozzle 107 is used to be connected to a negative pressure device.

[0038] In the present utility model, the high-pressure pipe is used to input high-pressure liquid into the pressure pipe 102. The high-pressure liquid entering the pressure pipe 102 enters the movable nozzle 107 through the second corrugated pipe 108 and then sprays out at a high speed from the liquid outlet end of the movable nozzle 107. The high-speed liquid sprayed out from the movable nozzle 107 can clean and cut the biological tissue after contacting the biological tissue to achieve tissue separation. The liquid outlet end of the movable nozzle 107 is arranged towards the return hose 103, which is convenient for the negative pressure device connected to the return hose 103 to recover the tissue and waste liquid into the return pipe. When it is necessary to adjust the angle between the axis of the movable nozzle 107 and the axis of the pressure pipe 102 according to the actual situation so that the high-speed liquid sprayed out from the movable nozzle 107 can better cut tissues at different positions; since the movable joint 106 is flexibly connected to the housing 101 through the first corrugated pipe 104 and the movable nozzle 107 is flexibly connected to the pressure pipe 102 through the second corrugated pipe 108, after adjusting the position of the movable joint 106, the angle between the axis of the movable joint 106 and the axis of the housing 101 and the angle between the axis of the movable nozzle 107 and the axis of the pressure pipe 102 can be adjusted simultaneously, further improving the efficiency of water jet cleaning or cutting. The fixing component 109 is used to fix the movable joint 106 adjusted to a predetermined position.

[0039] In some embodiments, the fixing component 109 includes a first fixing plate 110, a second fixing plate 111 and a fixing bolt 112. The first fixing plate 110 is connected to the housing 101, the second fixing pipe is connected to the movable joint 106, and the first fixing plate 110 is hinged to the second fixing plate 111; the fixing bolt 112 is threadedly connected to the first fixing plate 110, and a plurality of limiting holes are provided on the second fixing plate 111. After the fixing bolt 112 cooperates with the limiting holes, the second fixing plate 111 can be fixed. After adjusting the position of the movable joint 106, rotate the fixing bolt 112 so that the fixing bolt 112 cooperates with the limiting holes, and then the adjusted movable joint 106 can be fixed.

[0040] In some embodiments, the limiting holes are arranged at equal intervals along the rotation direction of the second fixing plate 111. After rotating the movable joint 106 to adjust the spraying angle of the liquid jet during the use of the water jet, the fixing bolt 112 cooperates with the corresponding limiting hole rotated to the fixing bolt 112, and then the adjusted movable joint 106 can be fixed.

[0041] In some embodiments, the head of the movable nozzle 107 is semi-circular. One end of the movable joint 106 connected to the movable nozzle 107 is provided with a semi-circular groove. The semi-circular movable nozzle 107 is embedded in the semi-circular groove and fixedly connected to the semi-circular groove. By providing the semi-circular groove, the contact surface between the movable joint 106 and the movable nozzle 107 can be increased, so that the connection between the movable nozzle 107 and the movable joint 106 is more stable at any time.

[0042] In some embodiments, the movable joint 106 is provided with a first threaded groove for connecting to the protective shell. When the movable nozzle 107 is not working, the movable joint 106 is detachably connected to the protective shell through the first threaded groove; after the protective shell is connected to the first threaded groove, it can protect the movable nozzle 107 when the movable nozzle 107 is not working, and prevent the movable nozzle 107 from being damaged due to accidental contact during the unused process.

[0043] In some implementations, a fixing block 113 is installed in the housing 101. The fixing block 113 is provided with a first limiting hole 114 and a second limiting hole 115 for limiting the return hose 103 and the pressure pipe 102. By providing the first limiting hole 114 and the second limiting hole 115, the return hose 103 and the pressure pipe 102 can be limited. The diameters of the first limiting hole 114 and the second limiting hole 115 are both larger than those of the return hose 103 and the pressure pipe 102.

[0044] In some embodiments, a nozzle head is detachably installed at the liquid outlet end of the movable nozzle 107. The nozzle head is provided with spray holes for water flow to pass through. After the high-pressure water flow entering the movable nozzle 107 passes through the spray holes provided on the nozzle head, the high-pressure water flow can be focused into fine jets through the spray holes to achieve the cutting function.

[0045] In some embodiments, the movable nozzle 107 is provided with a second threaded groove. The nozzle head is threadedly connected to the movable nozzle 107 through the second threaded groove. The nozzle head is detachably connected to the movable nozzle 107 through the second threaded groove, so as to facilitate the installation and replacement of the nozzle head.

[0046] In some embodiments, the housing 101 is provided with anti-slip patterns. By providing the anti-slip patterns, it is convenient for the operator to hold.

[0047] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0048] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. It should be noted that any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A skull cutting water jet, comprising a housing (101), a pressure pipe (102) and a return hose (103) are arranged inside the housing (101), an input end of the pressure pipe (102) is connected with a high-pressure pipe, and it is characterized in that: One end of the housing (101) away from the high-pressure pipe is connected with a first bellows pipe (104), and one end of the first bellows pipe (104) away from the housing (101) is connected with a joint assembly (105). The joint assembly (105) includes a movable joint (106), a movable nozzle (107) and a second bellows pipe (108). The movable joint (106) is connected with one end of the pressure pipe (102) away from the high-pressure pipe through the second bellows pipe (108), and the movable joint (106) is connected with the housing (101) through the first bellows pipe (104). The movable nozzle (107) is connected with the movable joint (106), and a fixing assembly (109) for fixing the movable joint (106) is installed on the housing (101). The liquid outlet end of the movable nozzle (107) is arranged towards the inner wall of the return hose (103), and one end of the return pipe away from the movable nozzle (107) is used for connecting with a negative pressure device.

2. The water knife for skull cutting according to claim 1, characterized in that: The fixing assembly (109) includes a first fixing plate (110), a second fixing plate (111) and a fixing bolt (112). The first fixing plate (110) is connected with the housing (101), the second fixing pipe is connected with the movable joint (106), and the first fixing plate (110) is hinged with the second fixing plate (111). The fixing bolt (112) is threadedly connected to the first fixing plate (110), and a number of limiting holes are arranged on the second fixing plate (111). After the fixing bolt (112) cooperates with the limiting holes, the second fixing plate (111) can be fixed.

3. A cranial cutting water jet according to claim 2, characterized in that: The limiting holes are arranged at equal intervals along the rotation direction of the second fixing plate (111).

4. A skull cutting water jet according to claim 1, characterized in that: The head of the movable nozzle (107) is semi-circular. One end of the movable joint (106) connected with the movable nozzle (107) is provided with a semi-circular groove. The semi-circular movable nozzle (107) is embedded in the semi-circular groove and fixedly connected with the semi-circular groove.

5. A skull cutting water jet according to claim 1, characterized in that: The movable joint (106) is provided with a first thread groove for connecting with a protective shell.

6. A skull cutting water jet according to claim 1, characterized in that: A fixing block (113) is installed in the housing (101), and a first limiting hole (114) and a second limiting hole (115) for limiting the return hose (103) and the pressure pipe (102) are arranged on the fixing block (113).

7. A skull cutting water jet according to claim 1, characterized in that: The liquid outlet end of the movable nozzle (107) is detachably installed with a nozzle head, and spray holes for water flow to pass through are arranged on the nozzle head.

8. A cranial cutting water jet according to claim 7, characterized in that: A second thread groove is arranged on the movable nozzle (107), and the nozzle head is threadedly connected with the movable nozzle (107) through the second thread groove.

9. A cranial cutting water jet according to claim 1, characterized in that: Anti-slip patterns are arranged on the housing (101).

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