Medical pneumatic motor

Abstract

The invention discloses a medical pneumatic motor which comprises a shell, and an inner cavity with a circular cross section is formed in the shell. An output shaft is further arranged in the inner cavity, and a rotor is arranged on the output shaft. And the central axis of the output shaft is parallel to the central axis of the inner cavity, so that after an air source enters the inner cavity from one side of the shell, a high-pressure cavity and a low-pressure cavity are formed in the inner cavity. On the basis, when the air source enters the inner cavity, the rotor is driven to rotate, and the rotation of the rotor can drive the output shaft to rotate, so that a non-magnetic power source can be provided for the rotary cutter for the operation, and further the situation that an electromagnetic field generated when the motor works interferes with normal work of a precise instrument can be reduced; after an air source enters the inner cavity, a high-pressure cavity and a low-pressure cavity can be automatically formed, and on one hand, the rotor can rapidly and directionally rotate; and on the other hand, the rotating speed can be increased.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a medical pneumatic motor. Background Art

[0002] In some surgeries that require magnetic fields, such as breast surgery, the use of power tools will be restricted. Summary of the invention

[0003] The object of the present invention is to provide a medical pneumatic motor to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a medical pneumatic motor, comprising a shell, and an inner cavity with a circular cross-section is provided inside the shell; an output shaft is also provided in the inner cavity, and a rotor is provided on the output shaft; the central axis of the output shaft is arranged parallel to the central axis of the inner cavity, and when the air source enters the inner cavity from one side of the shell, a high-pressure cavity and a low-pressure cavity are formed in the inner cavity.

[0005] As a preferred technical solution of the present invention: the output shaft is a hollow structure.

[0006] As a preferred technical solution of the present invention: a connector is further provided at one end of the output shaft.

[0007] As a preferred technical solution of the present invention: one side of the housing supports one end of the output shaft through a first sealing cover, and the other side of the housing supports the other end of the output shaft through a second sealing cover.

[0008] As a preferred technical solution of the present invention: the first sealing cover is connected to the high-pressure chamber via an air inlet, and the first sealing cover is connected to the low-pressure chamber via an air outlet.

[0009] As a preferred technical solution of the present invention: the rotor is a bladed rotor.

[0010] By adopting the above technical scheme, the beneficial effect of the present invention is that when the gas source enters the inner cavity, the rotor is prompted to rotate, and the rotation of the rotor can drive the output shaft to rotate, so a non-magnetic power source can be provided for the rotary cutter used for surgery, thereby reducing the electromagnetic field generated by the motor when it is working to interfere with the normal operation of precision instruments. In particular, after the gas source enters the inner cavity, a high-pressure cavity and a low-pressure cavity can be automatically formed, which can enable the rotor to rotate rapidly in a directional manner; secondly, the rotation speed can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0012] Figure 2 It is a schematic diagram of the end face structure of the present invention.

[0013] In the figure: 1. housing; 2. rotor; 3. output shaft; 4. first sealing cover; 5. second sealing cover; 6. air inlet; 7. air outlet; 8. connector; 9. high-pressure chamber; 10. low-pressure chamber. DETAILED DESCRIPTION

[0014] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing 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 therefore should not be construed as a limitation on the present invention.

[0015] See also Figure 1-2 An embodiment of the present invention is as follows: a medical pneumatic motor comprises a shell 1, and an inner cavity with a circular cross-section is provided inside the shell 1; an output shaft 3 is also provided in the inner cavity, and a rotor 2 is provided on the output shaft 3; the central axis of the output shaft 3 is arranged parallel to the central axis of the inner cavity, and when the air source enters the inner cavity from one side of the shell 1, a high-pressure cavity 9 and a low-pressure cavity 10 are formed in the inner cavity, and the output shaft 3 referred to above is actually a hollow knife tube for surgery, and its specific size is determined according to the surgical requirements.

[0016] In summary, when the gas source enters the inner cavity, it causes the rotor 2 to rotate, and the rotation of the rotor 2 can drive the output shaft 3 to rotate, so it can provide a non-magnetic power source for the surgical rotary cutter, thereby reducing the electromagnetic field generated when the motor is working to interfere with the normal operation of precision instruments. In particular, after the gas source enters the inner cavity, a high-pressure chamber 9 and a low-pressure chamber 10 can be automatically formed, which can enable the rotor 2 to rotate rapidly in a directional manner; and secondly, the rotation speed can be increased.

[0017] Furthermore, since the output shaft 3 is a hollow structure, when one end of the output shaft 3 is connected to the negative pressure device through the trachea, the pathological tissue can be removed by negative pressure.

[0018] Furthermore, since a connector 8 is also provided at one end of the output shaft 3 , wherein the connector 8 is preferably a quick connector, after the air pipe is connected to the output shaft 3 , the air pipe will not rotate with the output shaft 3 .

[0019] On the basis of the above solution, since one end of the output shaft 3 is supported by the first sealing cover 4 provided on one side of the housing 1, and the other end of the output shaft 3 is supported by the second sealing cover 5 provided on the other side of the housing 1, both ends of the inner cavity of the housing 1 are sealed by the two sealing covers, and the rotor 2 can be easily taken out or installed in the inner cavity by disassembling the two sealing covers.

[0020] Furthermore, since the first sealing cover 4 is connected to the high-pressure chamber 9 through the air inlet 6, and the first sealing cover 4 is connected to the low-pressure chamber 10 through the air outlet 7, the air source can circulate in the inner chamber to ensure reliable rotation of the rotor 2.

[0021] Furthermore, since the rotor 2 is a bladed rotor, the rotor 2 can enlarge the contact area with the air source through the blades, thereby ensuring the power output of the output shaft 3.

[0022] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A medical pneumatic motor, characterized in that: It comprises a shell (1), and an inner cavity with a circular cross-section is provided inside the shell (1); An output shaft (3) is also provided in the inner cavity, and a rotor (2) is provided on the output shaft (3); The central axis of the output shaft (3) is arranged parallel to the central axis of the inner cavity, and when the gas source enters the inner cavity from one side of the shell (1), a high-pressure cavity (9) and a low-pressure cavity (10) are formed in the inner cavity.

2. A medical pneumatic motor according to claim 1, characterized in that: The output shaft (3) is a hollow structure.

3. A medical pneumatic motor according to claim 2, characterized in that: One end of the output shaft (3) is also provided with a connector (8).

4. A medical pneumatic motor according to claim 1, 2 or 3, characterized in that: One side of the housing (1) supports one end of the output shaft (3) via a first sealing cover (4), and the other side of the housing (1) supports the other end of the output shaft (3) via a second sealing cover (5).

5. A medical pneumatic motor according to claim 4, characterized in that: The first sealing cover (4) is connected to the high-pressure chamber (9) via an air inlet (6), and the first sealing cover (4) is connected to the low-pressure chamber (10) via an air outlet (7).

6. A medical pneumatic motor according to claim 5, characterized in that: The rotor (2) is a blade-type rotor.

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